Top 30 M&E contractors set for growth – ranking

Aaron Morby 2 weeks ago

The country’s leading M&E contractors saw revenue rise by nearly a fifth last year driven mainly by cost inflation.

But major firms are predicting a stronger year ahead as data centre work, commercial retrofits, life sciences and lab work starts to fire-up the sector.

The industry’s biggest players are also taking on major contract roles on data centre work as £100m-plus M&E packages hit the market.

During last year, Dalkia leap-frogged NG Bailey to become the industry’s biggest player after a rebrand that consolidated the Imtech, Inviron and SPIE UK brands.

Wates-owned SES, Skanska’s SRW and Gratte Brothers enjoyed strong sales growth lifting the firms up the rankings to now sit just below the big three.

Ranking M&E specialist Turnover £
2023 2022 2023 2022
1 2 Dalkia 601m 427m
2 1 NG Bailey 532m 500m
3 3 T Clarke 491m 425m
4 10 SES Engineering Services 299m 173m
5 8 SRW 267m 209m
6 14 Gratte Brothers 250m 125m
7 4 Crown House 238m 269m
8 7 Vital Energi 220m 227m
9 6 Briggs & Forrester 212m 234m
10 11 Dodd Group 207m 167m
11 12 Phoenix 170m 160m
12 19 Essex Services Group 167m 114m
13 24 HE Simm 116m 66m
14 15 Ark Mechanical & Electrical Services 112m 115m
15 23 JCA Engineering 105m 72m
16 17 Mace MEP 82m 69m
17 16 Dornan Engineering 78m 45m
18 22 Borough Engineering 78m 72m
19 NEW PIP 68m 36m
20 27 LJJ 63m 64m
21 29 Designer Group 62m 58m
22 21 Derry Building Services 60m 78m
23 NEW Stothers M&E 59m 49m
24 20 King & Moffatt UK 58m 79m
25 NEW J & B Hopkins 55m 46m
26 26 CMB Engineering 54m 64m
27 NEW Price Building Services 52m 49m
28 NEW MCS 51m 21m
29 NEW Bancroft 50m 57m
30 30 Swiftline Engineering 49m 57m
Total revenue 4,905m 4,128m


Last year’s challenging business environment of inflation, shortage of workers, project delays and supply chain disruptions saw Michael J Lonsdale become the sector’s highest-profile casualty.

Other firms going under included London’s Haydon ME, York’s JDL Electrical, Plumbing & Heating and Bradford-based H Mitton and Newcastle’s

The top 30 firms saw a record six newcomers last year with four operating in London and south east.

The Top 30 is compiled for trade body BESA by Gokhan Hassan, Managing Director at Chartered QS practice, GHCS


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