UK B2B count, as of 31 October 2026

SIC code 41100: 16,380 contacts at 2,420 companies

16,380 named contacts at 2,420 companies, counted on dataset 2026-W44. Counting is free, and the 7,350 emailable records cost £1,837.50 ex VAT, bought the cheapest way.

16,380 named contacts as of 31 October 2026
2,420 companies
7,350 emailable, a named email scoring 70 or more
1% of the 1,568,550 named contacts
355.5 contacts per 1,000 local units Nomis local units, 2026: 46,080 in SIC code 41100, UK
Short answer

As of 31 October 2026, MyDataHub by Emailmovers counts 16,380 named contacts at 2,420 companies for SIC code 41100, development of building projects. That is 1 percent of the 1,568,550 named contacts in the dataset, about 1 in 96. Each company has 6.8 named contacts on average. That is 355.5 contacts per 1,000 local units (Nomis local units, 2026: 46,080 in SIC code 41100, UK).

What would this list cost?

One credit buys one complete record. 7,350 credits cover the 7,350 emailable records in this count, as of 31 October 2026. They cost 7,350 records at 25p, £1,837.50 ex VAT in all. Prices are in GBP ex VAT. Counting, breakdowns and masked samples are free.

Buy it now. Pay by card and the list goes straight to your account. Buy now.

The price of the 7,350 records in this count, GBP ex VAT, count as of
Way to buy You pay in all Credits you get Left over Terms
7,350 records at 25p £1,837.50 7,350 0 Exactly the credits you need, every one at the rate of the band the purchase falls in. No minimum order.

Lists are priced per record: 25p a record up to 9,999 records, 22p from 10,000, 19.5p from 25,000 and 17p from 50,000, with no minimum order. MyDataHub pricing covers credits for the app.

Who is in this audience?

Three breakdowns of the 16,380 contacts, from the same count, each chosen because it differs from the database as a whole. A cell under 10 reads "under 10", and a withheld cell is held back so a smaller cell cannot be worked out from the others.

Top counties and boroughs: Development of building projects
County or borough Contacts Companies Share of contacts
Milton Keynes 1,945 15 12 percent
City of London 1,290 45 7.9 percent
Westminster 1,270 175 7.8 percent
York 865 under 10 5.3 percent
Warwickshire 755 35 4.6 percent
Hertfordshire 645 85 3.9 percent
Greater Manchester 460 85 2.8 percent
Essex 385 80 2.4 percent
Kent 355 65 2.2 percent
Lambeth 335 10 2 percent

171 smaller groups are not listed.

Job function: Development of building projects
Function Contacts Companies Share of contacts
General management 3,215 1,560 20 percent
Skilled trades and construction 2,105 505 13 percent
Project management 1,825 370 11 percent
Operations 1,395 400 8.5 percent
Finance 1,270 475 7.8 percent
Sales 1,180 420 7.2 percent
Engineering 1,075 205 6.6 percent
HR 525 175 3.2 percent
IT and telecoms 525 160 3.2 percent
Office and administration 495 285 3 percent

19 smaller groups are not listed.

Company size: Development of building projects
Employees Contacts Companies Share of contacts
1 to 5 1,995 860 12 percent
6 to 9 475 185 2.9 percent
10 to 19 930 340 5.7 percent
20 to 49 1,815 390 11 percent
50 to 99 805 140 4.9 percent
100 to 199 1,405 170 8.6 percent
200 to 349 1,520 135 9.3 percent
350 to 499 470 30 2.9 percent
500 to 999 780 60 4.8 percent
1,000 to 1,499 60 under 10 0.4 percent
1,500 to 4,999 1,485 55 9.1 percent
5,000 to 9,999 2,700 15 16 percent
10,000 or more 1,905 under 10 12 percent

1 smaller group is not listed.

Named business emails at active UK companies. Count as of (dataset 2026-W44). Counts are shown as an anonymous visitor sees them: rounded to the nearest 5, and any cell under 10 reads "under 10".

What do the records look like?

10 anonymised rows from this count. No names, emails or company names appear on this page; the app shows the same masked sample with the reason each record matches.

Anonymised sample: Development of building projects
Job title Level Industry Company type Employees Place Email verification
Civil Engineer Senior staff Construction Private limited company 1 to 5 EH1, Scotland Verified 31 October 2026
Site Supervisor Manager Construction Private limited company 10 to 19 CT3, South East Verified 31 October 2026
Assistant CxO Construction Private limited company 10,000 or more MK9, South East Unverified
Manager Manager Construction Public limited company 1,500 to 4,999 IG10, East of England Unverified
Company Director Director Construction Private limited company 1 to 5 TR8, South West Unverified
Designer Director Construction Private limited company 100 to 199 GL51, South West Verified 31 October 2026
Managing Director Director Construction Private limited company 6 to 9 LS15, Yorkshire and the Humber Verified 31 October 2026
Head Chef Director Construction Private limited company 200 to 349 TR17, South West Verified 31 October 2026
Recruitment Consultant Senior staff Construction Private limited company 10 to 19 TS10, North East Verified 31 October 2026
Quantity Surveyor Partner Construction Public limited company 5,000 to 9,999 W1W, London Unverified

About this audience

No single county or borough dominates: Milton Keynes is largest at 12 percent, City of London follows at 7.9 percent, then Westminster at 7.8 percent. Milton Keynes is over-represented: 12 percent here against 1.2 percent across the database. The spread is similar by job function: General management is largest at 20 percent, Skilled trades and construction follows at 13 percent, then Project management at 11 percent. Skilled trades and construction is over-represented: 13 percent here against 2 percent across the database. By company size the audience is also spread out: the 5,000 to 9,999 employee band is largest at 16 percent, the 1 to 5 employee band follows at 12 percent, then the 10,000 or more employee band at 12 percent. The 5,000 to 9,999 employee band is over-represented: 16 percent here against 5.3 percent across the database. The three largest are Milton Keynes, City of London and Westminster, together 28 percent of contacts.

7,350 of the contacts are emailable, meaning a named email scoring 70 or more at a corporate subscriber. 9,960 (61 percent) have a telephone number held, below the database figure of 72 percent. Every telephone number is screened against the TPS and CTPS each night through a licensed screening service, and carries its status and the date of that screen. We treat a screen as valid for 28 days, our own rule rather than the ICO's. Screen the numbers you are supplied yourself before calling, and again every 28 days.

This count uses one filter. The SIC filter uses code 41100, and a company counts when it holds that code. It covers named business emails at active UK companies. Individual subscribers, meaning sole traders and ordinary partnerships, are excluded by default. Emailmovers relies on legitimate interests under UK GDPR Article 6(1)(f) for named business contacts.

How we count explains title matching, places and rounding. The trust page lists sources, sub-processors and the legal basis.

Questions about contacts at companies with SIC code 41100

How many contacts at companies with SIC code 41100 are there?

16,380 named contacts at 2,420 companies, counted on dataset 2026-W44 as of 31 October 2026. Counts are rounded to the nearest 5 for anyone without a paid account, and a paid account shows exact figures.

How is this audience matched?

The SIC filter uses code 41100, and a company counts when it holds that code. Run the same filters in the app to see the count live and change any of them.

How much would this list cost?

7,350 credits buy the 7,350 emailable records, one credit a record, and they cost 7,350 records at 25p, £1,837.50 ex VAT in all. Lists are priced per record: 25p a record up to 9,999 records, 22p from 10,000, 19.5p from 25,000 and 17p from 50,000, with no minimum order. Counting is free.

Is it legal to email these contacts?

For corporate subscribers, such as companies, LLPs, Scottish partnerships and public bodies, the PECR consent rule does not apply. Sole traders and ordinary partnerships are excluded by default. A named work email is also personal data, so you need a lawful basis such as legitimate interests.

How fresh is this count?

It was counted on dataset 2026-W44 as of 31 October 2026. Run this count in the app for the latest figure.

Can I see a sample before I buy?

Yes. The table above shows anonymised rows with no names or emails. The app shows 10 masked rows for any count of 25 or more, and the API returns up to 25.

ICO registration
Z9714386 Renews 18 December 2026
Residency
Stored in the UK; verified in the EU and US Google Cloud London for storage. Email verification runs in the EU with some US traffic, and phone checks in the US. Sub-processors listed
Warranty today
Replaced above 10 percent hard bounces Per order. Terms
Last verification
Dataset 2026-W44 Measured 31 October 2026

Sources: Emailmovers research, Companies House (Open Government Licence v3.0) and the ONS Postcode Directory (Open Government Licence v3.0). Count id cnt_UPK5UAMZDBPZNSQ5OAHZ.

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