Search UK public tenders and contract notices
Official notices, one row per procedure. Filters use published facts only: delivery region from the notice, buyer type from the official classification, route and agreement type as published, never a Tenderline score.
Planned
Showing 1–50 · planned procurement and market-engagement notices for the coming year: expected date ahead or published in the last 12 months.
- Planned · tender expected
AMP 8/9 Reservoir Maintenance Term Service Contract
Portsmouth Water Limited · South East England
Portsmouth Water (PW) owns, operates and maintains service reservoirs that form a critical part of its potable water supply infrastructure. The reservoir portfolio comprises approximately 35 concrete service reservoirs ranging in capacity f…
- Value
- £5.8m
- Term
- Not published
- Submit via
- portal not identified
- Published
- #0786b8
- Planned · tender expected FrameworkSME · VCSE suitable
Laundry Equipment & Services
University of Reading · Nationwide (UK)
SUPC is exploring the viability of a potential framework agreement. The scope of this tender is the procurement of Laundry Equipment, services, supporting infrastructure and maintenance/repair of the associated equipment. Domestic equipment…
- Value
- £0ceiling, not a contract size
- Term
- 2 yearsup to 3 years with extensions
- Submit via
- portal not identified
- Published
- #06d044
- Planned · tender expected FrameworkSME suitable
Asset Sustainability, Improvement and Decarbonisation Framework
EASTERN PROCUREMENT LIMITED · North East England, North West England, Yorkshire and the Humber, East Midlands, West Midlands, East of England
Eastern Procurement (EP) is a not-for-profit, member-led procurement organisation working primarily with Registered Providers of Social Housing and Stock-Holding Local Authorities. With more than 20 years of experience and a growing nationa…
- Value
- £450mceiling, not a contract size
- Term
- 4 years
- Submit via
- portal not identified
- Published
- #06ef4b
- Planned · tender expected Competitive flexible procedure
Managed Equipment Services
Imperial College Healthcare NHS Trust · Central government · Greater London
Managed Equipment Service provision across North West London Acute Provider Group to include but not limited to: - ICHT – Imperial College Healthcare Trust - CW – Chelsea and Westminster NHS Foundation Trust - LNW – London North West Univer…
- Value
- £1.0bn
- Term
- 7 yearsup to 10 years with extensions
- Submit via
- portal not identified
- Published
- #06ab46
- Planned · tender expected ConcessionSME · VCSE suitable
Solar Partnership Market Engagement
West Midlands Combined Authority · Local authority · West Midlands
Solar Partnership Market Engagement. We are issuing a UK2 Preliminary Market Engagement Notice to formally invite market responses. Our prospectus outlines our objectives and current thinking — and sets out four high-level questions for whi…
- Value
- £731m
- Term
- 5 years
- Submit via
- portal not identified
- Published
- #068ce0
- Planned · tender expected Competitive flexible procedureUtilitiesSME suitable
Remote CCTV - all fleet
WM TRAINS LIMITED · Nationwide (UK), North East England, North West England, Yorkshire and the Humber, East Midlands, West Midlands
London Northwestern and West Midlands Railway (Operated by WM Trains Limited) are seeking to procure a cloud-based system that allows remote access to CCTV images recorded and stored in the on-board Network Video Recorders (NVR) fitted to s…
- Value
- £1.8m
- Term
- 5 yearsup to 7 years with extensions
- Submit via
- portal not identified
- Published
- #06a4b7
- Planned · tender expected FrameworkSME · VCSE suitable
Framework for the Supply and Installation of Accessibility Equipment and Independent Living Adaptations
SUNDERLAND CARE AND SUPPORT LIMITED · North East England
The requirements are structured as follows. • Lot 1 Straight Track Stairlifts. • Lot 2 Curved Track Stairlifts. • Lot 3 Through Floor Lifts. • Lot 4 Ceiling Tracking Hoists. • Lot 5 Automatic WCs. • Lot 6 Prefabricated Ramps.
- Value
- Not published
- Term
- 4 years
- Submit via
- portal not identified
- Published
- #051f67
- Planned · tender expected Competitive flexible procedureFrameworkUtilities
SF6 Leak Repair Framework
National Grid Electricity Transmission plc · Nationwide (UK)
National Grid Electricity Transmission (NGET) intends to establish a framework for the provision of Sulphur Hexafluoride (SF6) leak repair, leak reduction and preventative treatment services across its portfolio of Gas Insulated Switchgear …
- Value
- £7.5mceiling, not a contract size
- Term
- 3 yearsup to 5 years with extensions
- Submit via
- SAP Aribalogin required
- Published
- #06f388
- Planned · tender expected
Home Safety and Security Installation Service
Kent County Council · Local authority · South East England
Short Description:Kent County Council is undertaking preliminary market engagement on Tuesday 25 August 10:00-11.30 and Friday 4 September 10:00-11.30, to inform the future development of its Home Safety and Security Installation Service. W…
- Value
- £1.5m
- Term
- 3 years
- Submit via
- portal not identified
- Published
- #06cd2e
- Planned · tender expected Competitive flexible procedureSME · VCSE suitable
Pathology Managed Equipment Service (MES) – South 4 Pathology Network
Oxford University Hospitals NHS Trust · Central government · South East England, South West England
Oxford University Hospitals NHS Foundation Trust is undertaking this procurement in its own name and on behalf of the other participating trusts within the South 4 Pathology Network, namely Buckinghamshire Healthcare NHS Trust, Milton Keyne…
- Value
- £150m
- Term
- 7 yearsup to 14 years with extensions
- Submit via
- portal not identified
- Published
- #06b135
- Planned · tender expected Open procedure
Service Quality Standards
SE TRAINS LIMITED · North East England, North West England, Yorkshire and the Humber, East Midlands, West Midlands, East of England
Procurement of Service Quality Auditors and a Service Quality Management System to support and evidence Southeastern's compliance with the Service Quality Standards set by the Department for Transport under Southeastern's service agreement
- Value
- Not published
- Term
- 3.5 years
- Submit via
- portal not identified
- Published
- #0695e1
- Planned · tender expected FrameworkUtilitiesSME suitable
PRO005183-Works-Framework-Power Resilience
United Utilities Water Limited · North West England
Ensuring power resilience across operational assets is a critical priority for United Utilities, with substantial investment expected to continue throughout the remainder of AMP8 and into AMP9. United Utilities is therefore exploring the es…
- Value
- £145mceiling, not a contract size
- Term
- 8 yearsup to 9 years with extensions
- Submit via
- portal not identified
- Published
- #077ed2
- Planned · tender expected Open procedure
New Carriage Washing Machine (Ramsgate)
SE TRAINS LIMITED · North East England, North West England, Yorkshire and the Humber, East Midlands, West Midlands, East of England
New train carriage washing machine to replace existing machine at Ramsgate depot.
- Value
- Not published
- Term
- 5 months
- Submit via
- portal not identified
- Published
- #0695b4
- Planned · tender expected Competitive flexible procedureSME suitable
Strategic Resident Safety, Call Bell and Connected Care Solution
Anchor Hanover Group · North East England, North West England, Yorkshire and the Humber, East Midlands, West Midlands, East of England
Anchor Hanover Group is England's largest not-for-profit provider of housing and care for older people, operating 120 care homes across England. These services support over 6000 older people with a range of residential care needs where safe…
- Value
- £6.0m
- Term
- 7 years
- Submit via
- portal not identified
- Published
- #077c2f
- Planned · tender expected
Adaptations and Telecare Installations
Argyll and Bute Council · Local authority · Scotland
Occupational Therapy minor adaptations, Telecare installation services and Major Adaptations support services
- Value
- Not published
- Term
- Not published
- Submit via
- portal not identified
- Published
- #077ebd
- Planned · tender expected Competitive flexible procedureFrameworkSME suitable
Marine Research Vessel Refit, Maintenance, Equipment and Support Services Framework
National Oceanography Centre · Nationwide (UK)
The National Oceanography Centre (NOC) is looking to establish an open framework for the refit, maintenance, equipping and sustainment of its operational research vessels, including RRS James Cook and RRS Discovery, together with associated…
- Value
- £100mceiling, not a contract size
- Term
- 8 years
- Submit via
- portal not identified
- Published
- #06e6ac
- Planned · tender expected FrameworkSME suitable
Digital Pathology Solution: Digital Scanning, Image Management, AI Quality Control, AI Diagnostic Integration Framework, Storage and Teleconsultation
Cambridge University Hospitals NHS Foundation Trust · Central government · East of England
Cambridge University Hospitals NHS Foundation Trust (CUH) seeks to engage with potential suppliers via this Preliminary Market Engagement (PME) exercise to seek feedback and information to inform the forthcoming procurement of a comprehensi…
- Value
- £5.0mceiling, not a contract size
- Term
- 7 yearsup to 10 years with extensions
- Submit via
- portal not identified
- Published
- #06cac9
- Planned · tender expected FrameworkSME · VCSE suitable
Vending Solutions
SUPPLY CHAIN COORDINATION LIMITED · North East England, North West England, East Midlands, West Midlands, East of England, Greater London
NHS Supply Chain: Food is planning to establish a Framework Agreement for the supply of products including but not limited to: Cold Drinks, Snacks and Confectionery Vending Machines, Chilled & Hot Food Vending Machines, Hot Beverage Vending…
- Value
- £120mceiling, not a contract size
- Term
- 8 years
- Submit via
- portal not identified
- Published
- #06ac71
- Planned · tender expected Open procedureSME · VCSE suitable
Single Procurement of Council Streaming Services and Audio Visual Solutions
London Borough of Lewisham · Local authority · Greater London
The project seeks to consolidate the delivery, maintenance and support of hybrid meeting technology across Lewisham Council’s Council Chamber and relevant meeting rooms under a single primary supplier. The scope includes audio-visual equipm…
- Value
- Not published
- Term
- 3 yearsup to 5 years with extensions
- Submit via
- ProContract (Due North)login required
- Published
- #078e12
- Planned · tender expected FrameworkSME · VCSE suitable
Technology Products and Associated Services 3
Government Commercial Agency · Central government · Nationwide (UK)
Please be aware that the UK1 Pipeline notice notice was published under OCID ocds-h6vhtk-054f76. Link: https://www.findtender.service.gov.uk/Notice/082326-2025 This framework will allow the purchase of off the Shelf (CotS) Hardware (Technol…
Likely replaces the contract “Technology Services 4” · ends
- Value
- £20bnceiling, not a contract size
- Term
- 4 years
- Submit via
- portal not identified
- Published
- #07814c
- Planned · tender expected FrameworkSME · VCSE suitable
Technology Products and Associated Services 3
Government Commercial Agency · Central government · Nationwide (UK)
Please be aware that the UK1 Pipeline notice notice was published under OCID ocds-h6vhtk-054f76. Link: https://www.findtender.service.gov.uk/Notice/082326-2025 This framework will allow the purchase of off the Shelf (CotS) Hardware (Technol…
Likely replaces the contract “Technology Services 4” · ends
- Value
- £20bnceiling, not a contract size
- Term
- 4 yearsup to 4 years with extensions
- Submit via
- portal not identified
- Published
- #059c51
- Planned · tender expected FrameworkSME suitable
Mechanical, Electrical, Energy & Compliance Works Framework
Procurement for Housing · North East England, North West England, Yorkshire and the Humber, East Midlands, West Midlands, East of England
PfH is developing a framework to provide solutions for UK Public Sector organisations in the Housing, Central Government, Local Government, Blue Light, Health, Education and Transport sectors for use across their estates and premises in Eng…
- Value
- £500mceiling, not a contract size
- Term
- 4 years
- Submit via
- portal not identified
- Published
- #077e61
- Planned · tender expected FrameworkSME suitable
Capital Programme Delivery Framework(s)
SEVERN TRENT WATER LIMITED · Yorkshire and the Humber, East Midlands, West Midlands, Wales (Cymru)
The intention of this procurement is to place several Framework(s), that will cover Capital Works across the geographical areas in which STW and HD operate, in England and Wales, for Lots covering Managed Service, Design & Build, and Direct…
- Value
- £25bnceiling, not a contract size
- Term
- 8 yearsup to 12 years with extensions
- Submit via
- portal not identified
- Published
- #06d705
- Planned · tender expected SME suitable
Cross Pavement Channels for On-street Electric Vehicle Charging
Hampshire County Council · Local authority · delivery region not published
Hampshire County Council is considering whether cross‑pavement channels could form part of the county’s future on‑street electric vehicle charging infrastructure. The Authority is intending to reach out to the market via market engagement. …
- Value
- £320k
- Term
- 4 years
- Submit via
- portal not identified
- Published
- #069415
- Planned · tender expected Competitive flexible procedureSME · VCSE suitable
Managed Service for Catheterisation Lab, Cardio Thoracic Centre and Vascular
Mid and South Essex NHS Foundation Trust · Central government · East of England
This is a UK1 pipeline notice only. Mid and South Essex NHS Foundation Trust (“the Authority”) intends to procure a managed service supporting Catheterisation Laboratories, Cardiothoracic and Vascular services across Basildon, Broomfield an…
- Value
- £0
- Term
- 10 yearsup to 15 years with extensions
- Submit via
- portal not identified
- Published
- #067499
- Planned · tender expected FrameworkSME · VCSE suitable
Managed Equipment & Clinical Service Solutions
SUPPLY CHAIN COORDINATION LIMITED · Nationwide (UK)
Supply Chain Coordination Limited (“NHS Supply Chain”) is exploring options in further developing a Managed Equipment & Clinical Service Solutions framework. This framework agreement will offer access to managed services which provide fully…
- Value
- £2.1bnceiling, not a contract size
- Term
- 2 yearsup to 4 years with extensions
- Submit via
- portal not identified
- Published
- #064964
- Planned · tender expected SME suitable
RM6404 Postal Services and Solutions 2
Government Commercial Agency · Central government · delivery region not published
This commercial agreement will be the recommended vehicle for all postal services and solutions required by UK Central Government. This procurement is for the provision of a multi Supplier Framework Contract which will consist of multiple l…
- Value
- £2.7bn
- Term
- 3 yearsup to 4 years with extensions
- Submit via
- portal not identified
- Published
- #05a558
- Planned · tender expected SME suitable
Public EV charging network 2026
West Sussex County Council · Local authority · South East England
West Sussex County Council (WSCC) is seeking to procure an Electric Vehicle Charging Network across the county of West Sussex.
- Value
- Not published
- Term
- 15 years
- Submit via
- portal not identified
- Published
- #06a9f6
- Planned · tender expected
Desktop Client Devices
Scottish Government · Scotland
Scottish Procurement intends to establish a national collaborative framework for the provision of Desktop Client Devices and supporting supplies and services for the Scottish public sector. The current single supplier framework is due to ex…
Likely replaces the contract held by HP INC UK LIMITED
- Value
- £150m
- Term
- Not published
- Submit via
- portal not identified
- Published
- #077efe
- Planned · tender expected FrameworkSME suitable
ComIT 4 - ICT Solutions
Mid and South Essex NHS Foundation Trust · Central government · Nationwide (UK)
HealthTrust Europe (HTE) is launching the ComIT 4 - ICT Solutions Framework, designed to provide public sector organisations with the most cost-effective and straightforward route to market for ICT and digitisation requirements. The single-…
- Value
- £6.0bnceiling, not a contract size
- Term
- 2 yearsup to 4 years with extensions
- Submit via
- portal not identified
- Published
- #06a815
- Planned · tender expected Open procedureFrameworkSME suitable
COMIT4 - ICT Solutions
Mid and South Essex NHS Foundation Trust · Central government · Nationwide (UK)
HealthTrust Europe (HTE) is launching the ComIT 4 - ICT Solutions Framework, designed to provide public sector organisations with the most cost-effective and straightforward route to market for ICT and digitisation requirements. The single-…
- Value
- £6.0bnceiling, not a contract size
- Term
- 2 yearsup to 4 years with extensions
- Submit via
- portal not identified
- Published
- #06a40b
- Planned · tender expected Open procedureFramework
HE Data Centre Equipment and Infrastructure Framework 2028
NEUPC Ltd · Nationwide (UK)
North Eastern Universities Purchasing Consortium Ltd (NEUPC) is one of six UK Higher Education purchasing consortia established to deliver and manage a wide range of collaborative framework agreements designed to maximise third party expend…
- Value
- £30mceiling, not a contract size
- Term
- 2 yearsup to 4 years with extensions
- Submit via
- portal not identified
- Published
- #06a1c4
- Planned · tender expected Competitive flexible procedureUtilities
Poole Water Recycling and Transfer
Wessex Water Services Ltd · South West England
As part of wider plans from the West Country Water and Environment Group (WCWE), two projects are in early planning and development, namely the Poole Water Recycling and Transfer Project, and Cheddar 2 Reservoir and Transfer. This Prelimina…
- Value
- £345m
- Term
- 25 years
- Submit via
- portal not identified
- Published
- #055a5d
- Planned · tender expected Competitive flexible procedureFramework
Firefighting Equipment and Associated Services
NEUPC Ltd · North East England, North West England, East Midlands, West Midlands, East of England, South East England
The services will be split into Lots to cover Fire Equipment Supply and Maintenance Fire Safety Inspections, Fire Risk Assessment & Consultation and Fire Safety Training Fire Safety Prevention Detection, Alarms and Suppression Systems
- Value
- £500kceiling, not a contract size
- Term
- 4 years
- Submit via
- portal not identified
- Published
- #06a205
- Planned · tender expected FrameworkSME suitable
Legible London 5
Transport for London · delivery region not published
Retender for the supply, manufacture, install and reactive maintenance of Legible London Wayfinding system
Likely replaces the contract held by Trueform Engineering Limited
- Value
- Not published
- Term
- 4 years
- Submit via
- portal not identified
- Published
- #069979
- Planned · tender expected Concession
Provision of Fully Funded Electric Vehicle Charge Points
Buckinghamshire Council · Local authority · delivery region not published
Buckinghamshire Council intends to procure a fully funded solution for the provision of electric vehicle charging infrastructure across the county. The opportunity is expected to include the installation, operation, maintenance, and managem…
- Value
- £60m
- Term
- 15 years
- Submit via
- portal not identified
- Published
- #078723
- Planned · tender expected Open procedureFrameworkSME suitable
FW - Enterprise Solutions for End to End ICT 3 (ESEE 3)
Mid and South Essex NHS Foundation Trust · Central government · Nationwide (UK)
HealthTrust Europe (HTE) is launching the Enterprise Solutions for End-to-End ICT (ESEE ICT Solutions 3) Framework, providing a simple, cost-effective route to market for public sector organisations to procure Original Equipment Manufacture…
- Value
- £2.0bnceiling, not a contract size
- Term
- 3 yearsup to 5 years with extensions
- Submit via
- portal not identified
- Published
- #06a40f
- Planned · expected · not yet publishedSME · VCSE suitable
HPI Vehicle Checks
City of Bradford Metropolitan District Council · Local authority · Yorkshire and the Humber
City of Bradford Metropolitan District Council is undertaking Preliminary Market Engagement to understand the market for vehicle data and vehicle history checking services to support its statutory licensing and regulatory functions. The Cou…
- Value
- £585k
- Term
- 3 years
- Submit via
- portal not identified
- Published
- #06f675
- Planned · expected · not yet published
AP26089 - Security Systems RSM Contract
Arc Property Services Partnership Limited · Yorkshire and the Humber, East Midlands
Arc Property Services Partnership Limited (the Client) is publishing this Preliminary Market Engagement Notice (UK2) in accordance with the Procurement Act 2023. The purpose of this engagement is to inform the market of an upcoming procurem…
- Value
- £1.0m
- Term
- 23 monthsup to 6 years with extensions
- Submit via
- portal not identified
- Published
- #077981
- Planned · expected · not yet publishedFrameworkSME suitable
Framework for the Provision of Electric Vehicle (EV) Charging Infrastructure and Managed Services
THE UNIVERSITY OF BIRMINGHAM · Education · West Midlands
Preliminary Market Engagement Notice for the Framework Agreement for the Provision of Electric Vehicle (EV) Charging Infrastructure and Managed Services to the University of Birmingham. Procurement description The University of Birmingham (…
- Value
- Not published
- Term
- 3 yearsup to 4 years with extensions
- Submit via
- portal not identified
- Published
- #077f07
- Planned · expected · not yet publishedConcession
Preliminary Market Engagement (PME) for Installation, Operation and Maintenance of Electric Vehicle Charge Points Across 6 London Boroughs
London Borough of Ealing · Local authority · Greater London
The Council, as part of a partnership of six West and North London boroughs, is preparing to procure Electric Vehicle Charge Point (EVCP) infrastructure through the Local Electric Vehicle Infrastructure (LEVI) funding programme. Funding of …
- Value
- £482m
- Term
- 15 yearsup to 16 years with extensions
- Submit via
- portal not identified
- Published
- #06c142
- Planned · expected · not yet publishedFrameworkSME suitable
Minor, Mechanical & Electrical Framework
London Borough of Harrow · Local authority · Greater London
Framework for Minor Works, Mechanical Works and Electrical Works for the Council's estate portfolio.
- Value
- £36mceiling, not a contract size
- Term
- 8 years
- Submit via
- portal not identified
- Published
- #0524c3
- Planned · expected · not yet publishedConcession
Tender for the Provision of On-Street Electric Vehicle chargepoints
Buckinghamshire Council · Local authority · South East England
Buckinghamshire council is going to procure for the supply, installation, and maintenance of Electric Vehicle Chargepoints, funded through the Local Electric Vehicle Infrastructure (LEVI) project to help increase Electric Vehicle Charging I…
- Value
- £6.2m
- Term
- 15 years
- Submit via
- portal not identified
- Published
- #069df4
- Planned · expected · not yet publishedFrameworkSME suitable
AT1360 - Fire Door Replacement and Maintenance Framework
Luton Borough Council · Local authority · East of England
A Fire Door Framework Agreement for Luton Borough Council to support the inspection, maintenance, repair and replacement of fire doors across the Council’s housing and corporate property portfolio. The Council intends to establish a multi-s…
- Value
- £8.0mceiling, not a contract size
- Term
- 8 years
- Submit via
- portal not identified
- Published
- #06efad
- Planned · expected · not yet published
Kew Wakehurst Controlled Environment Facility
Royal Botanic Gardens, Kew · South East England
The Royal Botanic Gardens, Kew (RBG Kew) is seeking to procure the design, supply and installation of environmental control chambers within a new controlled environment research facility at its Wakehurst site. The facility will support plan…
- Value
- £600k
- Term
- 8 months
- Submit via
- portal not identified
- Published
- #06ed45
- Planned · expected · not yet publishedConcessionSME suitable
ChargeHubs EV Infrastructure Network Expansion Concession Contract - Market Engagement
Milton Keynes Council · Local authority · South East England
Milton Keynes City Council (the "Council") conducted a procurement, under Procurement OCID ocds-h6vhtk-051d58, giving an opportunity to private sector to fund the expansion of our Chargehubs Electric vehicle Infrastructure (EVI) Network . T…
- Value
- Not published
- Term
- 25 years
- Submit via
- portal not identified
- Published
- #06dda9
- Planned · expected · not yet publishedOpen procedureConcessionSME · VCSE suitable
Request for Information for North Yorkshire Council Electric Vehicle Charging Network
The North Yorkshire Council · Local authority · Yorkshire and the Humber
North Yorkshire Council would like to engage with the market to help inform the development of its approach for the delivery of Electric Vehicle Charging Network.
- Value
- £21m
- Term
- 15 years
- Submit via
- portal not identified
- Published
- #06a291
- Planned · expected · not yet publishedCompetitive flexible procedure
Gas Metering Services
Peabody Trust Ltd · Greater London
Peabody require a supplier to support with Gas Metering services. This is a Pipeline Notice in line with the Procurement Act 2023 while the procurement route and full scope are still being determined.
- Value
- £3.4m
- Term
- 3 years
- Submit via
- portal not identified
- Published
- #06a743
- Planned · expected · not yet publishedSME suitable
Upgrade of Switchgear & LV Distribution Network
Nuclear Restoration Services Limited · delivery region not published
A recent survey and subsequent high level electrical distribution strategy concerning operationally restricted (OR) low voltage (LV) switchgear across the Dounreay Site has been developed. The scope of works encompasses primary supply to 23…
- Value
- Not published
- Term
- 5 yearsup to 7 years with extensions
- Submit via
- portal not identified
- Published
- #069ebd
- Planned · expected · not yet publishedFrameworkSME · VCSE suitable
NOE CPC Laundry and Linen Services Total Solutions II
Leeds and York Partnership NHS Foundation Trust · Central government · Nationwide (UK)
NHS North of England Commercial Procurement Collaborative (NOE CPC) is undertaking preliminary market engagement to inform the development of a replacement framework for its existing Laundry and Linen Services Total Solutions (NOE.0572) fra…
- Value
- £1.0bnceiling, not a contract size
- Term
- 2 yearsup to 4 years with extensions
- Submit via
- portal not identified
- Published
- #052857