List of Pharmaceutical Companies in the UK

Last updated 2 November 2026

There are 634 pharmaceutical companies in the UK, one in every 13,937 UK companies. Most of them are small: three in four have one to four people, and only 53 firms employ 50 people or more. Seven in ten of all pharmaceutical firms are based in London, South East, North West, East of England and West Midlands. Below you find the largest pharmaceutical 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.

634 companies indexed · Data counted on 2 November 2026

Companies6341 in13,937 UK companiesRegions12Largest regionLondon 180Sole traders2%Employees1-4 (73%)Revenue< $100K (41%)Email13%Phone38%Website34%

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A live view of all 634 pharmaceutical firms, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

Ucb CelltechUcb Celltech

	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	Ucb Celltech	Unitedkingdom	Slough	216 Bath Road	Slough	SL1 4EN	*****.com	2006	$3,422,370,755	1,411	Foreign company	106	FC027218
2	Teva UK Holdco 1 LIMITED	Unitedkingdom	Castleford	Ridings Point Whistler Drive	Wakefield, West Yorkshire	WF10 5HX	*****.com	2019	$2,288,771,598	3	Corporation	5	12210932
3	Teva UK Holdco 3 LIMITED	Unitedkingdom	Castleford	Ridings Point Whistler Drive	Wakefield, West Yorkshire	WF10 5HX	*****.com	2019	$1,733,528,685	5	Corporation	3	12211029
4	Roche Products LIMITED	Unitedkingdom	Oaklands	Unit 6	Hertfordshire	AL7 1TW	*****.uk	1908	$1,522,633,133	1,417	Corporation	17	00100674
5	Glaxosmithkline International LIMITED	Unitedkingdom	Holborn	79 New Oxford Street	London	WC1A 1DG	*****.com	1988	$1,432,834,477	4,000	Corporation	697	02298366
6	Teva UK Holdco 2 LIMITED	Unitedkingdom	Castleford	Ridings Point Whistler Drive	Wakefield, West Yorkshire	WF10 5HX	*****.com	2019	$1,177,900,281	8	Corporation	3	12211017
7	Wellcome Trust	Unitedkingdom	Hampstead	Wellcome Trust	London	NW1 2BF	*****.org	1962	$753,599,418	1,051		3	210183
8	Jazz Pharmaceuticals Operations UK LIMITED	Unitedkingdom	Chestnut Street	Building 730	Kent	ME9 8AG	*****.com	1999	$573,283,831	521	Corporation	13	03704998
9	Aventis Pharma LIMITED	Unitedkingdom	Whiteknights	410 Thames Valley Park Drive	Wokingham	RG6 1PT	*****.uk	1980	$525,624,058	585	Corporation	539	01535640
10	Glaxosmithkline Sl LP	Unitedkingdom	Holborn	79 New Oxford Street	London	WC1A 1DG	*****.com	2009	$457,650,127	4,000	Partnership of unknown type	N/A	LP013718
11	Omega Pharma LIMITED	Unitedkingdom	Braunton	Wrafton, Wrafton	Devon	EX33 2DL	*****.com	1887	$430,213,462	242	Corporation	195	00922235
12	Actavis Holdings UK Ii LIMITED	Unitedkingdom	Ashford	Whiddon Valley	Devon	EX32 8NS	*****.uk	1998	$388,953,366	600	Corporation	423	03557692
13	Accord-Uk LTD	Unitedkingdom	Barnstaple	Whiddon Valley	Devon	EX32 8NS	*****.uk	1903	$317,563,099	699	Corporation	132	00079585
14	Norbrook Holdings LIMITED	Unitedkingdom	Market Harborough	Unit 6	Leicestershire	LE16 8HB	N/A	1988	$266,355,251	1,735	Corporation	14	02258447
15	Fujifilm Diosynth Biotechnologies UK LIMITED	Unitedkingdom	Bowesfield Industrial Estate	New Billingham House	Stockton-on-tees	TS23 1LH	*****.com	1970	$255,147,475	991	Corporation	1549	05803359
16	Norbrook Laboratories LIMITED	Unitedkingdom	Ballyrenan	Station Works	Newry, Mourne and Down	BT35 6JP	*****.com	1968	$206,072,514	1,353	Corporation	14	NI007665
17	Napp Pharmaceutical Holdings LIMITED	Unitedkingdom	Childerley Gate	Science Park	Cambridgeshire	CB4 0GW	*****.uk	1997	$196,120,547	381	Corporation	8	03486244
18	Crescent Pharmaceuticals LIMITED	Unitedkingdom	Basingstoke	Key House	Hampshire	RG21 8SR	*****.com	2003	$191,302,578	426	Corporation	7	07117426
19	Teva Pharma Holdings LIMITED	Unitedkingdom	Castleford	Ridings Point Whistler Drive	Wakefield, West Yorkshire	WF10 5HX	N/A	2016	$185,842,703	26	Corporation	423	10119709
20	Fisher Clinical Services UK LIMITED	Unitedkingdom	Horsham	Langhurstwood Road	West Sussex	RH12 4QD	*****.com	2004	$184,274,059	662	Corporation	29	05281630
21	Smithkline Beecham LIMITED	Unitedkingdom	Holborn	79 New Oxford Street	London	WC1A 1DG	*****.com	1989	$181,193,186	608	Corporation	697	02337959
22	Shionogi B.V.	Unitedkingdom	Paddington	3rd Floor, Fifty Paddington	London	W2 6LG	N/A	2018	$180,061,995	166	Foreign company	82	FC035874
23	Kiniksa Pharmaceuticals International, PLC	Unitedkingdom	Holborn-strand-covent Garden	105 Piccadilly	London	W1J 7NJ	N/A	2024	$152,423,880	338	Corporation	8	15630565
24	Calea UK LIMITED	Unitedkingdom	Runcorn	Cestrian Court	Halton	WA7 1NT	*****.uk	1990	$139,389,242	638	Corporation	1070	02506615
25	Kindeva Drug Delivery LIMITED	Unitedkingdom	Loughborough	Derby Road	Leicestershire	LE11 5SF	N/A	2020	$122,542,142	536	Corporation	9	12422016

Showing 25 of 634 companies

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Pharmaceutical firms in London

London has 180 pharmaceutical companies and pharmaceutical firms, <0.1% of all 1,945,804 London companies and 29% above the national share. Four in five London firms have fewer than five people; 12 have 50 or more. 13 new firms were entered in 2026, 7 date from before 1990.

Size

1-4 staff: 135 · 79%
5-9: 13 · 8%
10-19: 6 · 4%
20-49: 5 · 3%
50+: 12 · 7%

Legal form

Sole traders: 3 · 2%
Partnerships: 1 · 0.6%
Ltd and PLC: 161 · 89%
Other or none: 15 · 8%

Of the UK total: 28.4%
Of all London companies: <0.1%
Against the national share: 1.3×

New

Entered 2026 so far: 13
Entered 2025: 34
Of UK's 2026 entries: 37.1%

Old

Before 1990: 7 · 4%
1990 or later: 173 · 96%
Of UK's pre-1990 firms: 24.1%

Reachable

Email: 20 · 11%
Phone: 46 · 26%
Website: 43 · 24%

Revenue (USD)

Under $100K: 92 · 54%
$100K-$500K: 30 · 18%
$500K-$1M: 17 · 10%
$1M and more: 32 · 19%

Largest

14,000
24,000
31,051
4661
5338

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Firm sizes in the UK

Of the 546 UK pharmaceutical firms with a known headcount, 397 (73%) have one to four people, 52 have five to nine, 44 have ten to 49 and 53 have 50 or more. Most firms turn over under $100,000 a year (225, 41%).

EU size bands · the grey line shows all UK companies

Micro under 10449 82%
Small 10 to 4944 8%
Medium 50 to 24936 7%
Large 250+17 3%

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

firms turn over more than $5 million a year; 72 more than $10 million.

firms were entered in 2026.

How many pharmaceutical companies are there in the UK?

Pharmaceutical companies and pharmaceutical firms in the UK

634

2 November 2026

There are 634 pharmaceutical companies and pharmaceutical firms in the UK in our data (2 November 2026). That is one in every 13,937 UK companies. About one new firm is entered in the register every week this year (35 so far in 2026).

Structure

Single-site firms: 473 75%
Head offices: 71
Branch offices: 90

Classification

Our platform filter is the national code 21200.

510 of the 634 are Ltd and PLC (80%); 13 are sole traders. They come from Companies House and our UK register data, through the Companies House API.

Where in the UK?

London has the most pharmaceutical companies in the UK (180), ahead of South East (112), North West (61), East of England (61) and West Midlands (43). Together the five hold seven in ten of them.

Regions by number of firms

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

Largest pharmaceutical firms in the UK

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

GlaxoSmithKline International is the largest pharmaceutical firm in the UK by headcount. 53 firms employ 50 people or more; 38 employ 100 or more.

1London4,000 staff
2London4,000 staff
3Hertfordshire1,417 staff
4SloughForeign company1,411 staff
5Newry1,353 staff
6Birmingham · public body1,187 staff
7London · public body1,051 staff
8Stockton-on-Tees991 staff
9Devon699 staff
10West Sussex662 staff

By employee size · 546 firms with a known headcount

Employees	Firms	%
1-4	397	73%
5-9	52	10%
10-19	22	4%
20-49	22	4%
50-99	15	3%
100-199	8	1%
200-499	13	2%
500-999	11	2%
1,000+	6	1%

73% have 1 to 4 people; 22 have 20 to 49; 53 have 50 or more.

By yearly revenue (USD)

Revenue	Firms	%
< $100K	225	41%
$100K-$500K	128	24%
$500K-$1M	51	9%
$1M-$5M	61	11%
$5M-$10M	7	1%
$10M-$50M	34	6%
$50M-$100M	11	2%
$100M-$500M	18	3%
$500M+	9	2%

41% under $100,000; 61 between $1M and $5M; 79 above $5M.

How they compare

Next to related industries

There are 15 chemical companies for every pharmaceutical firm in the UK.

Industry	Firms	Website	1-4 staff
Chemical Companies	9,751	41%	72%
Cosmetics Companies	2,995	27%	86%
Pharmaceutical Companies	634	34%	63%

In other countries

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

Country	Firms	Per 1,000 cos.
The UK	634	0.1
The Netherlands	427	0.1
Sweden	157	0.1

More countries →

Free sample: pharmaceutical firms in Europe

The oldest firms in the UK

Our data holds 2 UK pharmaceutical firms from before 1900, 6 from before 1950 and 29 from before 1990.

1843
1. Wokingham
1887
1. Devon
1903
1. Devon
1908
1. Hertfordshire
1910
1. Lincolnshire
1935
1. Swansea

Older than you

Live tool

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

1990

UK pharmaceutical firms date from before 1990

were entered in 1990

Sole traders or Ltd: how they are organised

One in forty-nine UK pharmaceutical firms work as sole traders, against 7% of all UK companies. Four in five are Ltd and PLC.

Sole traders132%
Partnerships (partnerships and LLPs)50.8%
Ltd and PLC51080%
No form on record or other10617%

Single-site: 75%
Head offices: 71
Branches: 90

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

Newcomers in the UK in 2026

35 pharmaceutical firms were entered in the UK register so far in 2026, about one per week, after 65 in 2025. The UK as a whole saw 534,395 new companies in 2026, so this industry takes <0.1% of the inflow.

232022
252023
382024
652025
352026 so far

35 of this year's 35 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.

1Wiltshire7 staff
2Staffordshire6 staff
3London5 staff
4London5 staff
5Leicestershire2 staff

How reachable are they?

Pharmaceutical firms are easier to reach than the average UK company: 38% list a phone number and 34% a website.

Email80 13%
Phone241 38%
Website215 34%

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

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

Frequently asked questions

How many pharmaceutical companies are there in the UK?

There are 634 pharmaceutical companies and pharmaceutical firms in the UK in our data, counted on 2 November 2026. That is one in every 13,937 UK companies.

Which is the largest pharmaceutical firm in the UK?

GlaxoSmithKline International in London, with 4,000 staff. By revenue Roche Products in Hertfordshire leads with $1.5 billion a year.

Which UK region has the most pharmaceutical companies?

London, with 180, ahead of South East (112), North West (61), East of England (61) and West Midlands (43).

How many pharmaceutical firms are there in London?

180, which is <0.1% of all 1,945,804 London companies and 29% above the national share.

How big is a typical pharmaceutical firm?

Small. 73% of the 546 firms with a known headcount have one to four people; 53 have 50 or more. Most turn over under $100,000 a year.

Are UK pharmaceutical companies sole traders or companies?

One in forty-nine (13) are sole traders, 0.8% are partnerships and 80% (510) are Ltd and PLC.

How many pharmaceutical firms started in 2026?

35 were entered in the UK register so far in 2026, after 65 in 2025. 35 of them are Ltd and PLC.

What is the oldest pharmaceutical firm in the UK?

Fisons in Wokingham, 1843, followed by Omega Pharma in Devon (1887) and Accord-Uk in Devon (1903). 2 firms date from before 1900.

Which industry code covers pharmaceutical companies?

Our platform filters them on the national code 21200.

Can I download the full list?

Yes. All 634 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.

Manufacturing

Companies in UK cities

Europe

Americas

Pharmaceutical Companies in the USA

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