Mechanical installations: UK Tenders, Buyers & Competition
CPV 45350000·Works · class·in Construction & Civil Engineering
Codes and neighbouring classes
The 8-digit CPV codes notices in this class actually use, and the other classes of the same division
45350000 Mechanical installations342 notices · 65%45351000 Mechanical engineering installation works243 notices · 46%- Building construction work 1,662 · 12m
- Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork 1,099 · 12m
- Electrical installation work 952 · 12m
- Roof works and other special trade construction works 938 · 12m
- Other building completion work 650 · 12m
- Building demolition and wrecking work and earthmoving work 593 · 12m
- Plumbing and sanitary works 489 · 12m
- Joinery and carpentry installation work 410 · 12m
- Engineering works and construction works 391 · 12m
- Works for complete or part construction and civil engineering work 361 · 12m
- All of Construction & Civil Engineering →
Who buys
All notices carrying this code · official UK_CA_TYPE where published (NHS bodies are central government authorities), else derived from the authority name
- Other public bodies 28% (143 notices)
- Local authorities 27% (138 notices)
- Central government 17% (89 notices)
- Education & universities 8% (42 notices)
- Housing associations 3% (15 notices)
- Not classified 17% (87 notices)
| Contracting authority | Type | Notices | Last 12 months | Open now |
|---|---|---|---|---|
| Portsmouth City Council | Local authorities | 16 | 5 | 0 |
| Scape Group Limited (trading as SCAPE) | Other public bodies | 16 | 0 | 0 |
| City & County of Swansea | Local authorities | 14 | 7 | 1 |
| Ministry of Defence | Central government | 10 | 6 | 1 |
| Sellafield Limited | Other public bodies | 9 | 1 | 0 |
| The Minister for the Cabinet Office acting through Crown Commercial Service | Central government | 8 | 1 | 1 |
| Nuclear Restoration Services Limited | Other public bodies | 8 | 6 | 0 |
| Procurement for Housing | Other public bodies | 8 | 1 | 0 |
| Scape Procure Scotland Ltd | not classified | 7 | 1 | 0 |
| Connexus Homes Limited | Other public bodies | 5 | 1 | 0 |
296 distinct authorities in total · the ten most active shown.
Where the work is delivered
Delivery regions (ITL1) published on 429 of 527 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 |
|---|---|---|---|---|
| Greater London | 10 | 59% | 45% | |
| South East England | 6 | 52% | 39% | |
| East of England | 4 | 63% | 55% | |
| Wales (Cymru) | 2 | — | — | |
| South West England | — | — | 64% | |
| West Midlands | — | — | — | |
| East Midlands | — | — | — | |
| Yorkshire and the Humber | 3 | — | — | |
| North West England | — | — | — | |
| Northern Ireland | — | — | — | |
| Scotland | — | — | — | |
| North East England | — | — | — |
Local wins = the winner’s registered region is the delivery region. Dashes: fewer than ten observations.
How it is bought
Commercial tool, procedure route and threshold as published on the notice, not a legal-regime claim
- Contract 61% (320 notices)
- Framework 36% (188 notices)
- Dynamic purchasing system 4% (19 notices)
- Open 43% (228 notices)
- Selective 29% (155 notices)
- Route not published 25% (130 notices)
- Limited / restricted 3% (14 notices)
- Above threshold 59% (86 notices)
- Below threshold 41% (61 notices)
Competition
Contracts published in the last 36 months (196) · bid counts per lot from award notices · values are net contract awards, framework and DPS ceilings excluded · SME and local status as declared
- 1 bid 10% (8)
- 2–3 28% (23)
- 4–6 29% (24)
- 7 or more 34% (28)
Who wins
Ranked by distinct procedures won on notices carrying this code, then award records · 1,036 awards to 622 suppliers · the five most frequent winners hold 9% of contract awards in the last 36 months
| Supplier | Procedures | Awards | Last 12 months | Buyers |
|---|---|---|---|---|
| Morgan Sindall Construction & Infrastructure Ltd | 8 | 9 | 1 | 3 |
| Kier Construction | 5 | 5 | 1 | 3 |
| McLaughlin and Harvey Limited | 5 | 5 | 0 | 3 |
| Willmott Dixon Construction Ltd | 5 | 5 | 1 | 3 |
| Irwin ME Ltd | 4 | 5 | 2 | 3 |
| BRIDGES (ELECTRICAL ENGINEERS) LIMITED | 3 | 4 | 1 | 3 |
| Fortem Solutions Limited | 3 | 3 | 0 | 3 |
| GEL ENGINEERING LIMITED | 3 | 3 | 1 | 3 |
Where to submit
E-sourcing portals named in the submission address · 202 of 527 notices name one · each portal page explains registration
Open tenders in mechanical installations
12 live at the nightly build · soonest deadline first
Method
What the numbers on this page are and are not
Which notices count?
Every Find a Tender notice that carries a CPV code starting 4535. A notice with several codes counts in each sector it names. Earliest notice 2021; latest 18 Sept 2026.
Competition figures
From the 36-month lot-grain contest statistics: a lot counts where its own CPV codes (or, for single-class notices, the procedure’s) start 4535. Bids per lot come from the award notice’s bid statistics; “competed” means an open or selective route with no direct-award transparency notice; contract values are net, on single-supplier awards, with framework and DPS ceilings excluded. Frameworks and dynamic purchasing systems are reported separately because their “bids” are admissions to a panel.
Why no total value or month-by-month chart?
Sums of notice estimates repeat framework ceilings and mix net with gross. Monthly volumes per sector are not shown yet: the catalogue’s CPV coverage per notice changed in May 2026 (compiled records carry every lot’s codes), so a curve would show the catalogue, not the market.