Transformers: UK Tenders, Buyers & Competition
CPV 31170000·Supplies · class·in Electrical machinery, apparatus, equipment and consumables; lighting
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Tenders you can still bid for.
Notices at tender stage whose deadline has not passed, counted the way the search counts them: a notice shows under every code and region it names.
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Notices published in the last 12 months.
Counted per tender, not per lot, against the 12 months before where shown.
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What a contract here is usually worth.
Middle value of published award values, VAT excluded. Framework ceilings are left out because they are not real contract values.
Based on 17 awards with a usable value, last 36 months.
Published values, not actual spend.
Codes and neighbouring classes
The 8-digit CPV codes notices in this class actually use, and the other classes of the same division
31174000 Power supply transformers18 notices · 43%31170000 Transformers16 notices · 38%31172000 Voltage transformers6 notices · 14%- Generators 82 · 12m
- Electronic equipment 69 · 12m
- Sound or visual signalling apparatus 66 · 12m
- Lamps and light fittings 60 · 12m
- Electrical supplies and accessories 58 · 12m
- Ballasts for discharge lamps or tubes 50 · 12m
- Electrical apparatus for switching or protecting electrical circuits 30 · 12m
- Lighting equipment and electric lamps 23 · 12m
- Electrical equipment and apparatus 15 · 12m
- Power distribution cables 15 · 12m
- All of Electrical machinery, apparatus, equipment and consumables; lighting →
Who buysi
Which buyers publish the most notices here.
Buyers ranked by the number of notices, duplicate names merged.
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Which buyers publish the most notices here.
Buyers ranked by the number of notices, duplicate names merged.
All notices carrying this code · official UK_CA_TYPE where published (NHS bodies are central government authorities), else derived from the authority name
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What kinds of public bodies buy here.
Notices by the buyer’s type as published, otherwise by its name.
Other public bodies38%(16 notices)
16 of 42 notices are Other public bodies (38%).Central government24%(10 notices)
10 of 42 notices are Central government (24%).Education & universities5%(2 notices)
2 of 42 notices are Education & universities (5%).Not classified33%(14 notices)
14 of 42 notices are Not classified (33%).
| Contracting authority | Type | Notices | Last 12 months | Open now |
|---|---|---|---|---|
| Northern Ireland Electricity Networks Limited | Other public bodies | 8 | 1 | 0 |
| SSE PLC | not classified | 7 | 1 | 0 |
| UK Research and Innovation | Central government | 7 | 3 | 0 |
| UK Atomic Energy Authority | Other public bodies | 3 | 2 | 0 |
| NATIONAL GRID UK LIMITED | not classified | 2 | 0 | 0 |
| THE PIRBRIGHT INSTITUTE | Other public bodies | 2 | 1 | 0 |
| United Kingdom Atomic Energy Authority | not classified | 2 | 0 | 0 |
| Cambridge University Hospitals NHS Foundation Trust | Central government | 1 | 1 | 0 |
| KBS MARITIME LIMITED | not classified | 1 | 0 | 0 |
| LondonEnergy Ltd | Other public bodies | 1 | 0 | 0 |
18 distinct authorities in total · the ten most active shown.
Where the work is deliveredi
Where the work on these notices is delivered.
Delivery regions published on the notices. A notice with several regions counts in each.
Where the work is, not where the buyer is based.
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Where the work on these notices is delivered.
Delivery regions published on the notices. A notice with several regions counts in each.
Where the work is, not where the buyer is based.
Delivery regions (ITL1) published on 33 of 42 notices · a notice covering several regions counts in each · competition columns: contracts awarded in the last 36 months, lots delivered in the region
| Region | Notices | Bids / lot | SME wins | Local wins |
|---|---|---|---|---|
| South East England | — | — | — | |
| Northern Ireland | — | — | — | |
| Scotland | — | — | — | |
| North West England | — | — | — | |
| Greater London | — | — | — | |
| East of England | — | — | — | |
| North East England | — | — | — | |
| South West England | — | — | — | |
| Yorkshire and the Humber | — | — | — | |
| East Midlands | — | — | — | |
| Wales (Cymru) | — | — | — | |
| West Midlands | — | — | — |
Local wins = the winner’s registered region is the delivery region. Dashes: fewer than ten observations.
How it is boughti
How work here is packaged.
Notices by commercial tool: a single contract, a framework, or a dynamic purchasing system.
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How work here is packaged.
Notices by commercial tool: a single contract, a framework, or a dynamic purchasing system.
Commercial tool, procedure route and threshold as published on the notice, not a legal-regime claim
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How work here is packaged.
Notices by commercial tool: a single contract, a framework, or a dynamic purchasing system.
Contract81%(34 notices)
34 of 42 notices are Contract (81%).Framework19%(8 notices)
8 of 42 notices are Framework (19%).
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Which procedures buyers here use.
Notices by the procedure they declare: open, selective, limited or direct. Open and selective are competitions; limited and direct are not.
Selective29%(12 notices)
12 of 42 notices are Selective (29%).Route not published24%(10 notices)
10 of 42 notices are Route not published (24%).Open19%(8 notices)
8 of 42 notices are Open (19%).Direct award14%(6 notices)
6 of 42 notices are Direct award (14%).Limited / restricted14%(6 notices)
6 of 42 notices are Limited / restricted (14%).
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How much of this market is above the legal threshold.
Notices by whether the buyer marked them above or below the threshold that triggers the full rules.
Above threshold67%(4 notices)
4 of 6 notices are Above threshold (67%).Below threshold33%(2 notices)
2 of 6 notices are Below threshold (33%).
Competition
Contracts published in the last 36 months (26) · bid counts per lot from award notices · values are net contract awards, framework and DPS ceilings excluded · SME and local status as declared
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The usual range of contract values here.
The middle half of published award values, VAT excluded, with the middle value marked. Framework ceilings are left out.
Published values, not actual spend.
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How much of this market is actually put out to competition.
Notices run as an open or selective procedure, out of all notices that say which procedure was used. Direct awards count as not competed.
11 of 19 notices that state a procedure, last 36 months. 7 more give no procedure and are left out.
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How often a tender ends with no award.
Notices cancelled, withdrawn or marked unsuccessful, plus terminated ones that never got an award.
0 of 26 notices, last 36 months.
Only what buyers published. Tenders that quietly went nowhere are not counted.
Who winsi
Which suppliers win the most here.
Suppliers ranked by the number of tenders won, not by money. A supplier on one big framework with many call-offs does not outrank one that won many separate competitions.
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Which suppliers win the most here.
Suppliers ranked by the number of tenders won, not by money. A supplier on one big framework with many call-offs does not outrank one that won many separate competitions.
Ranked by distinct procedures won on notices carrying this code, then award records · 26 awards to 23 suppliers
| Supplier | Procedures | Awards | Last 12 months | Buyers |
|---|---|---|---|---|
| Jema Energy | 2 | 2 | 1 | 2 |
| Kolektor Etra | 2 | 2 | 0 | 1 |
| Slaters Electrical Ltd | 2 | 2 | 2 | 1 |
| Bojen Electrical Ltd | 1 | 1 | 1 | 1 |
| Brush Group Limited | 1 | 1 | 0 | 1 |
| Chloride | 1 | 1 | 1 | 1 |
| Costruzioni Apparecchiature Elettroniche Nucleari C.A.E.N. S.p.A | 1 | 1 | 0 | 1 |
| D&A Systems Limited | 1 | 1 | 1 | 1 |
Where to submiti
Where bids for this work are submitted.
Notices by the portal in their submission link, where one is published.
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Where bids for this work are submitted.
Notices by the portal in their submission link, where one is published.
E-sourcing portals named in the submission address · 9 of 42 notices name one · each portal page explains registration
About this data
- Source. Official UK public procurement notices (Find a Tender), reused under the Open Government Licence v3.0. New notices arrive through the day; the figures are rebuilt nightly.
- What counts here. Every notice with a CPV code starting 3117. A notice with several codes counts in each sector it names. Notices from 2021 to 5 Oct 2026.
- Competition. Bids and winners cover the last three years and count each lot as its own contest; frameworks and dynamic purchasing systems are shown apart from ordinary contracts.
- Why no total spend. Notice estimates often repeat a framework’s ceiling, so adding them up would overstate the market. Typical contract values are shown instead.
- Every figure shows what it rests on. Not every notice publishes a bid count, a value or a delivery region, so each figure carries the number of records behind it, and one built on few records is marked as such. The on a figure explains it; the counting rules are in the methodology. Spotted something wrong? Tell us.