Companies in Slough

Q: How many companies are in Slough?

Our Slough business directory currently lists every registered legal entity with a Slough address in the official United Kingdom business register. The exact count is shown live at the top of this page.

Q: Where does Slough company data come from?

Slough records are sourced directly from the official United Kingdom business register and enriched with 50+ data points: revenue, employees, industry codes, contact details, and ownership.

Q: How often is Slough data updated?

Core registry fields are refreshed weekly. Enriched fields (revenue, employees, contact) are refreshed monthly so your Slough list never goes stale.

Q: Can I filter Slough companies by industry?

Yes. Every Slough record is tagged with SIC industry codes. You can request your directory filtered by one or several SIC codes, employee size bands, or revenue thresholds.

Q: Which file formats do you deliver?

Excel (.xlsx), CSV, and JSON. For API customers, data is streamed as paginated JSON. Custom formats (Parquet, SQL dump) are available on request.

Q: Is the Slough data GDPR compliant?

Yes. We only deliver legal-entity data and publicly listed business contact details. We do not include personal data of natural persons unless required by the company register itself (e.g. sole traders).

Q: Can I get a sample before buying?

Yes. Request a free 100-record sample of Slough data and we will email it within one business day.

Q: Do you offer API access for Slough data?

Yes. The full Slough dataset is available through our REST API with the same filters as our directory builder. See our API page for pricing tiers.

Q: How fast can Slough data be delivered?

Standard Excel and CSV directories are delivered within 24 hours. API access is provisioned within one business day. Rush delivery (same-day) is available on request.

Q: Can I get historical Slough data?

Snapshot data going back 3 years is available for most fields, and 7+ years for core registry fields. Useful for trend analysis and churn studies - ask for a custom quote.

Behind every street in Slough sits a business. 12,224 of them, to be exact, all registered in the United Kingdom business register. The biggest single industry is property developers with 685 companies, roughly 6% of everything that does business in the city.

12,224 businesses indexed

Reckitt Benckiser Group PLCReckitt Benckiser 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	Reckitt Benckiser Group PLC	Unitedkingdom	Slough	103 - 105 Bath Road	Slough	SL1 3UH	reckitt.*****	1840	$18,787,220,490	36,200	Corporation	504	06270876
2	Reckitt Benckiser Treasury Services PLC	Unitedkingdom	Slough	103-105 Bath Road	Slough	SL1 3UH	reckitt.*****	2006	$10,266,794,438	30	Corporation	504	05960843
3	Reckitt Benckiser (hygiene Home) Holdings LIMITED	Unitedkingdom	Slough	103-105 Bath Road	Slough	SL1 3UH	reckitt.*****	2017	$8,144,941,445	115	Corporation	504	11061572
4	Ucb Biopharma SRL	Unitedkingdom	Slough	208 Bath Road	Slough	SL1 3WE	ucb.*****	2020	$3,765,294,607	1,344	Foreign company	102	FC037714
5	Ucb Celltech	Unitedkingdom	Slough	216 Bath Road	Slough	SL1 4EN	ucb.*****	2006	$3,422,370,755	1,411	Foreign company	102	FC027218
6	Bfs Group LIMITED	Unitedkingdom	Slough	814 Leigh Road	Slough	SL1 4BD	bidvest.*****	1929	$3,284,614,536	3,973	Corporation	298	00239718
7	Reckitt Benckiser Health LIMITED	Unitedkingdom	Slough	Turner House	Slough	SL1 3UH	reckitt.*****	2017	$2,385,591,175	897	Corporation	504	11069293
8	Effem Holdings LIMITED	Unitedkingdom	Slough	3d Dundee Road	Slough	SL1 4LG	mars.*****	1998	$2,284,859,144	139	Corporation	3179	03689160
9	Mars Wrigley Confectionery UK LIMITED	Unitedkingdom	Slough	Dundee Road	Slough	SL1 4LG	mars.*****	1932	$1,959,325,496	1,853	Corporation	3179	06649982
10	Reckitt Benckiser (health) Holdings LIMITED	Unitedkingdom	Slough	103-105 Bath Road	Slough	SL1 3UH	gab-shw.*****	2017	$1,686,132,419	613	Corporation	504	11061440
11	Mars Pet Services UK LIMITED	Unitedkingdom	Slough	3d Dundee Road	Slough	SL1 4LG	mars.*****	2016	$1,684,663,176	15,687	Corporation	3179	10517852
12	Leaseplan UK LIMITED	Unitedkingdom	Slough	165 Bath Road	Slough	SL1 4AA	leaseplan.*****	1978	$1,665,784,855	659	Corporation	3821	01397939
13	Reckitt Benckiser LIMITED	Unitedkingdom	Slough	103-105 Bath Road	Slough	SL1 3UH	reckittbenckiser.*****	1953	$1,548,083,146	14	Corporation	504	00527217
14	Tesco Mobile LIMITED	Unitedkingdom	Slough	2 Future Works	Slough	SL1 1XN	tescomobile.*****	2003	$1,404,601,797	293	Corporation	33	04780736
15	Reckitt Benckiser Corporate Services LIMITED	Unitedkingdom	Slough	103-105 Bath Road	Slough	SL1 3UH	reckitt.*****	2000	$1,352,411,330	1,586	Corporation	504	04027682
16	Rb Holdings (nottingham) LIMITED	Unitedkingdom	Slough	103-105 Bath Road	Slough	SL1 3UH	N/A	2002	$1,258,929,675	32	Corporation	5	04367123
17	Reckitt Benckiser Investments LIMITED	Unitedkingdom	Slough	105 Bath Road	Slough	SL1 3UH	reckittbenckiser.*****	2003	$1,249,954,180	30	Corporation	504	04821049
18	Indivior UK LIMITED	Unitedkingdom	Slough	234 Bath Road	Slough	SL1 4DX	indivior.*****	2010	$1,053,272,000	393	Corporation	31	07183451
19	Mars Petcare UK	Unitedkingdom	Slough	3d,dundee Road	Slough	SL1 4LG	mars.*****	1932	$987,080,589	1,559	Corporation	3179	06649984
20	Ferrari Financial Services GMBH	Unitedkingdom	Slough	275 Leigh Road	Slough	SL1 4HF	ferrari.*****	2010	$902,472,712	47	Foreign company	5530	FC029486
21	Kp Snacks LIMITED	Unitedkingdom	Slough	The Urban Building	Slough	SL1 2BE	kpsnacks.*****	1853	$829,408,838	2,384	Corporation	145	08314505
22	Rb UK Commercial LIMITED	Unitedkingdom	Slough	103-105 Bath Road	Slough	SL1 3UH	N/A	2013	$825,443,414	383	Corporation	504	08784077
23	Food Manufacturers (G.B. Company)	Unitedkingdom	Slough	3d Dundee Rd	Slough	SL1 4LG	N/A	1974	$722,903,757	185	Corporation	3179	01191790
24	Ssl International PLC	Unitedkingdom	Slough	103-105 Bath Road	Slough	SL1 3UH	N/A	1944	$697,810,268	5,350	Corporation	504	00388828
25	Lego Company LIMITED	Unitedkingdom	Slough	33 Bath Road	Slough	SL1 3UF	lego.*****	1941	$636,023,948	1,689	Corporation	278	00368236

Showing 25 of 12,224 companies

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Largest companies in Slough

Which company is the largest in Slough depends on how you measure. You can look at valuation, at revenue or at how many people work there. Valuations are private for most companies, so here we stick to revenue and headcount.

By revenue, Reckitt Benckiser Group PLC comes first in Slough. It is part of a group with $18.8 billion in yearly revenue. By headcount, Ssl International PLC comes first with 5,350 employees. We only looked at the 9,021 corporations in Slough for this; sole traders, foundations and other legal forms are left out.

The two tables below show how all 12,224 companies in Slough are spread across revenue and headcount bands.

Yearly revenue

48.3%of companies have less than $100,000 in yearly revenue

Revenue (USD)	Count	Share
up to $100,000	5,905	48.3%
$100,000 to $500,000	3,273	26.8%
$500,000 to $1M	421	3.4%
$1M to $5M	405	3.3%
$5M to $10M	85	0.7%
$10M to $50M	113	0.9%
$50M to $100M	34	0.3%
$100M to $500M	35	0.3%
$500M to $1B	9	0.1%
$1B or more	18	0.1%
Unknown	1,926	15.8%

Headcount

73.8%of companies have 1 to 4 employees

Employees	Count	Share
1-4	9,017	73.8%
5-9	719	5.9%
10-19	312	2.6%
20-49	187	1.5%
50-99	79	0.6%
100-199	38	0.3%
200-499	34	0.3%
500-999	20	0.2%
1,000-4,999	17	0.1%
5,000-9,999	1	<0.1%
Unknown	1,800	14.7%

Source: business register and CompanyData. "Unknown" means no published figure.

Largest industries in Slough

The biggest industry groups in Slough by registered company count, with the top five companies by revenue in each.

Property developers

685 companies

SIC 6552

View all 685 in our tool →

Restaurants and eating places

595 companies

SIC 5812

View all 595 in our tool →

IT services

496 companies

SIC 7379

View all 496 in our tool →

E-commerce and mail-order retail

488 companies

SIC 5961

View all 488 in our tool →

General business services

431 companies

SIC 7389

View all 431 in our tool →

Trucking, Except Local

350 companies

SIC 4213

View all 350 in our tool →

Property lessors

306 companies

SIC 6519

View all 306 in our tool →

General Contractors-Residential Buildings, Other Than Single-Family

236 companies

SIC 1522

View all 236 in our tool →

All industries in Slough

Together, property developers, restaurants and eating places and IT services make up the top three industries in Slough, accounting for 15% of the city's commercial activity. The oldest company we can find in Slough is Barrett & Thomson, founded in 1824, with Slough Register Office not far behind. They are still here, along with 12,222 other businesses in Slough.

The Slough Trading Estate has anchored the town for a century, and its position between Heathrow and the M4 now draws data centres, logistics firms and international head offices. All of them are in our data. Look up a company in the table at the top of this page, get the full list delivered as an Excel file, or pull the records straight into your own systems through our API.

Nonclassifiable Establishments1,450
Land Subdividers and Developers, Except Cemeteries685
Eating Places595
Computer Related Services, Not Elsewhere Classified496
Catalog and Mail-Order Houses488
Business Services, Not Elsewhere Classified431
Trucking, Except Local350
Lessors of Real Property, Not Elsewhere Classified306
General Contractors-Residential Buildings, Other Than Single-Family236
Real Estate Agents and Managers234
Other industries6,953

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<p>Source: <a href="https://companydata.com/uk/slough/">Companies in Slough</a> by CompanyData</p>

How you receive Slough business data

Choose how you want to receive the data. Every company comes with 50+ fields, from address and industry to revenue and contact details, sourced from official United Kingdom business registers.

Excel / CSV download

Custom-built Slough directory in Excel or CSV. Filter by industry, employee size, or revenue. Delivered within 24 hours.

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Frequently Asked Questions

Common questions about searching, filtering, and ordering Slough company data.