List of Engineering Companies in the UK

Last updated 2 November 2026

There are 114,162 engineering companies in the UK, one in every 77 UK companies. Most of them are small: four in five have one to four people, and only 1,672 firms employ 50 people or more. Three in five of all engineering firms are based in London, South East, North West, East of England and Scotland. Below you find the largest engineering firms in the UK, the regions where they cluster, how many started this year and which are the oldest. The full list with addresses, phone numbers and email is in our UK company database or through the Companies House API.

114,162 companies indexed · Data counted on 2 November 2026

Companies114,1621 in77 UK companiesRegions12Largest regionLondon 20,539Sole traders8%Employees1-4 (84%)Revenue< $100K (49%)Email18%Phone38%Website41%

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A live view of all 114,162 engineering firms, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

Babcock International Group PLCBabcock International Group PLC

	Company Name	Country	City	Address 1	State/Province	Postal Code	Website	Founding Year	Yearly Revenue in U.S. Dollars	Employees Total	Business Legal Type - Description	Number of Companies in Group	Company Registration Number
1	Babcock International Group PLC	Unitedkingdom	Holborn-strand-covent Garden	33 Wigmore Street	London	W1U 1QX	*****.com	1989	$7,015,824,922	28,191	Corporation	160	02342138
2	Arm LIMITED	Unitedkingdom	Cambridge	110 Fulbourn Road	Cambridgeshire	CB1 9NJ	*****.com	1990	$4,003,000,000	3,346	Corporation	48	02557590
3	Mott Macdonald Group LIMITED	Unitedkingdom	Monument-aldgate-fenchurch Street-tower Hill	Mott Macdonald Ltd	London	EC4M 7RB	*****.com	1973	$3,282,663,725	18,765	Corporation	288	01110949
4	Imi PLC	Unitedkingdom	Birmingham	4060 Lakeside	Birmingham, West Midlands	B37 7XZ	*****.com	1862	$3,047,219,712	10,478	Corporation	264	00714275
5	Impact Foundation	Unitedkingdom	Haywards Heath	151 Western Road	West Sussex	RH16 3LH	*****.uk	1985	$2,990,585,311	8	Corporation	N/A	01878297
6	Wsp UK LIMITED	Unitedkingdom	Cordwainer	Wsp House	London	WC2A 1AF	*****.com	1978	$1,453,063,545	8,856	Corporation	1331	01383511
7	Hess International LIMITED	Unitedkingdom	Holborn-strand-covent Garden	Amerada Hess	London	WC2N 6AG	*****.com	1996	$1,397,216,555	667	Foreign company	1616	FC019099
8	Mott Macdonald LIMITED	Unitedkingdom	Monument-aldgate-fenchurch Street-tower Hill	10 Fleet Place	London	EC4M 7RB	*****.com	1902	$1,395,294,661	8,619	Corporation	288	01243967
9	Costain LIMITED	Unitedkingdom	Monument-aldgate-fenchurch Street-tower Hill	Seventh Floor	London	EC3A 8BE	*****.com	1865	$1,340,494,964	2,656	Corporation	42	00610201
10	Ove Arup & Partners International LIMITED	Unitedkingdom	Holborn	8 Fitzroy Street	London	W1T 4BJ	*****.com	1969	$1,233,992,868	6,615	Corporation	146	00952468
11	Aecom LIMITED	Unitedkingdom	Whitechapel	Aldgate Tower	London	E1 8FA	*****.com	1984	$1,033,677,061	4,144	Corporation	1754	01846493
12	Jacobs U.K. LIMITED	Unitedkingdom	Dulwich	Cottons Centre	London	SE1 2QG	*****.com	1895	$1,030,820,735	5,806	Corporation	90	02594504
13	Dialog Semiconductor LIMITED	Unitedkingdom	Bourne End	Dukes Meadow Millboard Road	Buckinghamshire	SL8 5FH	*****.com	1998	$853,247,855	2,164	Corporation	151	03505161
14	Amentum Clean Energy LIMITED	Unitedkingdom	Hollinfare	Amentum UK Ltd	Warrington	WA3 6XF	*****.com	1973	$733,616,793	2,519	Corporation	690	01120437
15	Fieldcore Service Solutions International LLC	Unitedkingdom	Stafford	Harry Kerr Drive	Staffordshire	ST16 1WT	N/A	1890	$723,291,000	17	Foreign company	523	FC024039
16	Foster + Partners LIMITED	Unitedkingdom	Battersea	Riverside	London	SW11 4AN	*****.com	1967	$721,405,416	1,930	Corporation	19	01644989
17	Nats LIMITED	Unitedkingdom	Wickham	4000 Parkway	Hampshire	PO15 7FL	*****.aero	1996	$718,511,480	4,528	Corporation	31	03155567
18	Ove Arup & Partners LIMITED	Unitedkingdom	Holborn	8 Fitzroy Street	London	W1T 4BJ	*****.com	1946	$707,354,312	438	Corporation	146	01312453
19	Linxon PVT LTD	Unitedkingdom	Epsom	Woodcote Grove Ashley Road	Surrey	KT18 5BW	*****.com	2017	$701,873,000	887	Corporation	171	11116970
20	Doosan Power Systems S.A.	Unitedkingdom	Crawley	Doosan House	West Sussex	RH10 9AD	*****.com	2012	$700,182,505	4,302	Foreign company	95	FC031178
21	Abf Overseas LIMITED	Unitedkingdom	Holborn-strand-covent Garden	10 Grosvenor Street Weston Centre	London	W1K 4QY	*****.uk	1997	$681,004,543	79	Corporation	1052	03313345
22	M.V. Kelly LIMITED	Unitedkingdom	Cheswick Green	Cogen Court	Solihull, West Midlands	B90 4LN	*****.uk	1995	$676,076,502	327	Corporation	5	03062853
23	Great Bear Distribution LIMITED	Unitedkingdom	Hollinfare	Chadwick House	Warrington	WA3 6AE	*****.uk	1994	$650,805,121	4,310	Corporation	151	02899719
24	Robert Bosch LIMITED	Unitedkingdom	Dunfermline East Business Parks	C/o Bosch Rexroth,	Fife	KY6 2RD	*****.uk	1924	$626,760,996	676	Corporation	2208	SC013418
25	Arcadis Consulting (UK) LIMITED	Unitedkingdom	Monument-aldgate-fenchurch Street-tower Hill	80 Fenchurch Street	London	EC3M 4BY	*****.com	1988	$604,462,470	2,432	Corporation	490	02212959

Showing 25 of 114,162 companies

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Where in the UK?

London has the most engineering companies in the UK (20,539), ahead of South East (16,427), North West (12,263), East of England (10,469) and Scotland (10,250). Together the five hold three in five of them. Relative to their size, North East, Scotland and South West have the most: 1.1 to 1.4 times the national share.

Regions by number of firms

12 UK regions have at least one engineering firm; 12 have ten or more; 0 have exactly one. Click a region to set the lens.

Only here

Where they cluster

Engineering firms per 100 companies, in regions with at least 100 of them. The national share is 1.29. North East has 1.4 times the national share.

1.4×
1.4×
1.1×
1.1×
1.1×
1.1×
1.0×
1.0×
1.0×
0.9×
0.9×
0.8×

Dashed line: the national share. A filled dot is twice the national share or more.

How many engineering companies are there in the UK?

Engineering companies and engineering firms in the UK

114,162

2 November 2026

There are 114,162 engineering companies and engineering firms in the UK in our data (2 November 2026). That is one in every 77 UK companies. About 30 new firms are entered in the register every working day this year (6,558 so far in 2026).

Structure

Single-site firms: 107,764 94%
Head offices: 3,617
Branch offices: 2,781

Classification

Our platform filter is the national code 711.

91,787 of the 114,162 are Ltd and PLC (80%); 9,494 are sole traders. They come from Companies House and our UK register data, through the Companies House API.

Engineering firms in London

London has 20,539 engineering companies and engineering firms, 1.1% of all 1,945,804 London companies and 18% below the national share. Nine in ten London firms have fewer than five people; 376 have 50 or more. 1,525 new firms were entered in 2026, 874 date from before 1990.

Size

1-4 staff: 17,337 · 85%
5-9: 1,344 · 7%
10-19: 747 · 4%
20-49: 527 · 3%
50+: 376 · 2%

Legal form

Sole traders: 1,142 · 6%
Partnerships: 763 · 4%
Ltd and PLC: 17,592 · 86%
Other or none: 1,042 · 5%

Of the UK total: 18.0%
Of all London companies: 1.1%
Against the national share: 0.8×

New

Entered 2026 so far: 1,525
Entered 2025: 2,384
Of UK's 2026 entries: 23.3%

Old

Before 1990: 874 · 4%
1990 or later: 19,665 · 96%
Of UK's pre-1990 firms: 13.3%

Reachable

Email: 4,204 · 20%
Phone: 7,394 · 36%
Website: 8,417 · 41%

Revenue (USD)

Under $100K: 11,225 · 55%
$100K-$500K: 6,276 · 31%
$500K-$1M: 970 · 5%
$1M and more: 1,783 · 9%

Largest

111,000
29,000
38,856
45,806
54,923

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Firm sizes in the UK

Of the 112,298 UK engineering firms with a known headcount, 94,091 (84%) have one to four people, 8,252 have five to nine, 8,283 have ten to 49 and 1,672 have 50 or more. Most firms turn over under $100,000 a year (54,236, 49%).

EU size bands · the grey line shows all UK companies

Micro under 10102,343 91%
Small 10 to 498,283 7%
Medium 50 to 2491,558 1%
Large 250+114 0.1%

Grey line: the share among all UK companies (93% have under ten staff).

2,610

firms turn over more than $5 million a year; 1,416 more than $10 million.

6,558

firms were entered in 2026.

Largest engineering firms in the UK

The biggest firms by staff and by revenue, the largest in London, the biggest newcomers of 2026 and the oldest firms. Click a name for the record.

Kentz Corporation is the largest engineering firm in the UK by headcount. 1,672 firms employ 50 people or more; 730 employ 100 or more.

1London11,000 staff
2London9,000 staff
3London8,856 staff
4London5,806 staff
5London4,923 staff
6Hampshire4,528 staff
7Warrington4,310 staff
8London4,144 staff
9Cambridgeshire3,346 staff
10London3,188 staff

By employee size · 112,298 firms with a known headcount

Employees	Firms	%
1-4	94,091	84%
5-9	8,252	7%
10-19	5,002	4%
20-49	3,281	3%
50-99	942	0.8%
100-199	396	0.4%
200-499	220	0.2%
500-999	71	<0.1%
1,000+	43	<0.1%

84% have 1 to 4 people; 3,281 have 20 to 49; 1,672 have 50 or more.

By yearly revenue (USD)

Revenue	Firms	%
< $100K	54,236	49%
$100K-$500K	41,818	38%
$500K-$1M	5,989	5%
$1M-$5M	6,696	6%
$5M-$10M	1,194	1%
$10M-$50M	1,102	1.0%
$50M-$100M	156	0.1%
$100M-$500M	125	0.1%
$500M+	33	<0.1%

49% under $100,000; 6,696 between $1M and $5M; 2,610 above $5M.

The oldest firms in the UK

Our data holds 95 UK engineering firms from before 1900, 602 from before 1950 and 6,591 from before 1990.

1815
1. Devon
1820
1. York
1821
1. Cumbria
1824
1. West Sussex
1828
1. Kent
1834
1. Cornwall

Older than you

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Move the slider to a year. Two live counts, scoped to this industry.

1990

6,591

UK engineering firms date from before 1990

606

were entered in 1990

Sole traders or Ltd: how they are organised

One in twelve UK engineering firms work as sole traders, against 7% of all UK companies. Four in five are Ltd and PLC.

Sole traders9,4948%
Partnerships (partnerships and LLPs)4,0044%
Ltd and PLC91,78780%
No form on record or other8,8778%

Single-site: 94%
Head offices: 3,617
Branches: 2,781

All UK companies: 7% sole traders, 3% partnerships, 62% Ltd and PLC.

Newcomers in the UK in 2026

6,558 engineering firms were entered in the UK register so far in 2026, about 30 a working day, after 9,661 in 2025. The UK as a whole saw 534,395 new companies in 2026, so this industry takes 1.2% of the inflow.

5,1402022
6,1992023
7,3202024
9,6612025
6,5582026 so far

6,512 of this year's 6,558 are Ltd and PLC.

The biggest newcomers of 2026

The year is the register entry; an established firm that changes legal form appears as new.

1Gloucestershire108 staff
2Belfast66 staff
3Essex60 staff
4Staffordshire50 staff
5Solihull50 staff

How reachable are they?

Engineering firms are easier to reach than the average UK company: 38% list a phone number and 41% a website.

Email20,176 18%
Phone43,917 38%
Website46,409 41%

Grey line: all UK companies (email 15%, phone 30%, website 30%).

The full list with these fields is in our UK company database.

How they compare

Next to related industries

There are 2 consulting companies for every engineering firm in the UK.

Industry	Firms	Website	1-4 staff
Consulting Companies	232,460	19%	95%
Engineering Companies	114,162	41%	82%
Accounting Companies	55,167	50%	80%
Architects	25,080	54%	83%
Tax Consultants	15,526	36%	91%
Market Research Companies	3,689	37%	80%

In other countries

The UK has more engineering firms than the Netherlands or Sweden.

Country	Firms	Per 1,000 cos.
The UK	114,162	12.9
The Netherlands	62,703	16.2
Sweden	45,952	24.8
Belgium	43,697	18.3
Italy	12,072	1.7

More countries →

Free sample: engineering firms in Europe

Frequently asked questions

How many engineering companies are there in the UK?

There are 114,162 engineering companies and engineering firms in the UK in our data, counted on 2 November 2026. That is one in every 77 UK companies.

Which is the largest engineering firm in the UK?

Kentz Corporation in London, with 11,000 staff. By revenue Babcock International Group in London leads with $7.0 billion a year.

Which UK region has the most engineering companies?

London, with 20,539, ahead of South East (16,427), North West (12,263), East of England (10,469) and Scotland (10,250). Relative to its size, North East has the most: 1.4 times the national share.

How many engineering firms are there in London?

20,539, which is 1.1% of all 1,945,804 London companies and 18% below the national share.

How big is a typical engineering firm?

Small. 84% of the 112,298 firms with a known headcount have one to four people; 1,672 have 50 or more. Most turn over under $100,000 a year.

Are UK engineering companies sole traders or companies?

One in twelve (9,494) are sole traders, 4% are partnerships and 80% (91,787) are Ltd and PLC.

How many engineering firms started in 2026?

6,558 were entered in the UK register so far in 2026, after 9,661 in 2025. 6,512 of them are Ltd and PLC.

What is the oldest engineering firm in the UK?

Michelmore Hughes Stags in Devon, 1815, followed by J.h.shouksmith & Sons in York (1820) and Cowens in Cumbria (1821). 95 firms date from before 1900.

Which industry code covers engineering companies?

Our platform filters them on the national code 711.

Can I download the full list?

Yes. All 114,162 firms with address, phone, email, legal form, employees, revenue and founding year, as Excel, CSV or through the API.

Discover more: related industries, by region, in other countries

The lists closest to this one. Every industry and city in the UK is on the UK page.

Professional, scientific and technical

Companies in UK cities

Europe

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Engineering Companies in the USA

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