Other telecommunications activities (SIC code 61900)
Other telecommunications activities is UK SIC code 61900. It sits in division 61 (Telecommunications) of the SIC 2007 list. On the August 2026 Companies House register, 11,300 active UK companies list 61900 among their SIC codes. 8,635 of them list it first. That makes it the most used code in its division.
11,300active UK companies list SIC 61900 among their codes on the public recordCompanies House · counts as of August 2026
SIC 61900 in numbers
11,300 companies is 0.22 per cent of the 5,190,464 active companies on the UK register. 61900 is the most used of the 4 codes we track in division 61.
8,635 put 61900 first and 2,665, 24 per cent, list it in one of their other three slots. First code only gives the tighter list; any position gives more of them.
ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN (WHERE THE PAPERWORK SITS, NOT NECESSARILY THE WORK) · COMPANIES HOUSE PUBLIC RECORD, AUGUST 2026
London is the largest cluster at 23 per cent and the top five post towns hold 28 per cent, so the other 72 per cent sit across the rest of the country. A regional filter narrows the list without gutting it.
A worked example: 61900, registered office in London, incorporated in the last ninety days, from a pool of 11,300. Each lead you get arrives with a working website and a real email, and the director's name when the record has one. If we cannot complete one, you pay nothing.
SIC 61900 companies, as leads
Live rows from the enriched public record. Email addresses are withheld until you sign up. Phone numbers come with paid plans.
Tell us who you sell to. We find them, with a real email. 100 free leads, no card.
Division 61 is for companies that carry voice and data. Infrastructure is what separates the codes.
Related SIC codes
How to read SIC 61900
SIC 61900 reads as division 61 (telecommunications), group 619, class 6190, then the full five digits, inside section J, information and communication. A company picks its own codes, up to four, and Companies House does not check them, so 61900 is the company's own description of what it does, and 8,635 list it first where 11,300 list it anywhere.
Who sells into division 61
Most companies here resell capacity. So the wholesale carriers and their distributors sell into this division all the time, competing to sign channel partners.
About SIC 61900
How many UK companies use SIC code 61900?
11,300 active UK companies list 61900 (Other telecommunications activities) among their registered SIC codes. Each company may register up to four. Of those, 8,635 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
Which code should a VoIP provider or telecoms reseller pick?
Use 61900, other telecommunications activities. It is the standard home for VoIP services, resellers, airtime dealers and ISPs running over networks owned by others. Codes 61100 and 61200 are for companies with their own wired or wireless infrastructure. You self-select the code at incorporation and can change it on any confirmation statement. No regulator or registry approval is involved.
Find UK SIC 61900 companies
Filter Companies House by this code. Each lead arrives with a working website and a real email, or you pay nothing. 100 free leads, no card.
✓ No card · ✓ 100 free leads · ✓ Nothing to cancel