Postal activities under universal service obligation (SIC code 53100)
Postal activities under universal service obligation is UK SIC code 53100. It sits in division 53 (Postal and courier activities) of the SIC 2007 list. On the August 2026 Companies House register, 2,511 active UK companies list 53100 among their SIC codes. 1,337 of them list it first. That makes it the third most used code in its division.
2,511active UK companies list SIC 53100 among their codes on the public recordCompanies House · counts as of August 2026
SIC 53100 in numbers
2,511 companies is 0.05 per cent of the 5,190,464 active companies on the UK register. 53100 is the third most used of the 3 codes we track in division 53.
Only 1,337 of the 2,511 put it first. The other 1,174, 47 per cent, list it behind another code, so a search on the first code alone would miss most of them. Match any of the four positions and tighten it with a second filter.
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 13 per cent and the top five post towns hold 23 per cent, so the other 77 per cent sit across the rest of the country. A regional filter narrows the list without gutting it.
A worked example: 53100, registered office in London, incorporated in the last ninety days, from a pool of 2,511. 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 53100 companies, as leads
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Division 53 covers moving letters and parcels. Its structure comes from old postal licensing language.
Related SIC codes
How to read SIC 53100
SIC 53100 reads as division 53 (postal and courier activities), group 531, class 5310, then the full five digits, inside section H, transportation and storage. A company picks its own codes, up to four, and Companies House does not check them, so 53100 is the company's own description of what it does, and 1,337 list it first where 2,511 list it anywhere.
Who sells into division 53
All those owner-drivers make this a volume market. Van leasing and finance brokers work these codes, as do courier and goods-in-transit insurers, fuel card sellers and accountants who specialise in subcontract drivers.
About SIC 53100
How many UK companies use SIC code 53100?
2,511 active UK companies list 53100 (Postal activities under universal service obligation) among their registered SIC codes. Each company may register up to four. Of those, 1,337 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
I deliver parcels for a courier network through my own limited company. Which code should I use?
Use 53202, unlicensed carriers. It is the usual choice for self-employed and subcontract couriers trading through a limited company, including drivers on the major parcel networks. You pick the code yourself when you form the company. You can change it later on a confirmation statement. No licence or approval is needed to use it.
Find UK SIC 53100 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.
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