BT postcode area

Companies registered in Belfast

There are about 83,500 active companies with a registered office in the BT postcode area (Belfast), as of October 2026.

Live figures, the full list, more filters, and CSV export.

Search and filter UK companies registered in Belfast and Northern Ireland from the Companies House register. Belfast is Northern Ireland's capital and largest business centre.

Regional business overview

Belfast has transformed into a thriving business centre with particular strengths in technology, cybersecurity, financial services, and creative industries. The city has attracted significant inward investment from major tech companies.

Key business areas include the city centre (professional services), the Titanic Quarter (tech and creative), and Cathedral Quarter (startups and creative industries). Belfast has developed strong cybersecurity and fintech clusters.

Postcode coverage

Belfast company searches use the BT postcode prefix, which covers all of Northern Ireland including Belfast, Derry/Londonderry, Newry, and other towns.

On the register

Share of these companies on the live register, by status.

Active 84%
Proposal to strike off 13%
In insolvency or administration 2%

New registrations

Companies registered each month, October 2025 – September 2026, that are still on the register. See registrations by month across all companies.

Show the figures

Month	Companies
October 2025	1,050
November 2025	801
December 2025	579
January 2026	903
February 2026	852
March 2026	1,040
April 2026	844
May 2026	788
June 2026	826
July 2026	753
August 2026	751
September 2026	788

Company age

How long the active companies have been registered.

Under 1 year 12%
1–3 years 18%
3–5 years 11%
5–10 years 22%
10–20 years 22%
20 years or more 15%

Top industries

Active companies in this area by SIC code. A company can have more than one SIC code.

68209 – Other letting and operating of own or leased real estate 5,960
68100 – Buying and selling of own real estate 3,470
47910 – Retail sale via mail order houses or via Internet 2,990
98000 – Residents property management 2,840
99999 – Dormant Company 2,750
70229 – Management consultancy activities other than financial management 2,540
41100 – Development of building projects 2,380
64209 – Activities of other holding companies n.e.c. 2,190
41202 – Construction of domestic buildings 2,180
82990 – Other business support service activities n.e.c. 1,690

Busiest postcode districts

Active companies by postcode district. Each links to those companies in the search.

BT34 4,270
BT1 4,070
BT35 2,850
BT48 2,670
BT9 2,650
BT47 2,330
BT4 2,110
BT23 2,110
BT71 2,090
BT7 1,930

Note: Location figures use the registered office address from Companies House. Many companies register at an accountant's or formation agent's address, which may differ from where they trade.

Recently registered companies

Active companies recently registered in the BT postcode area.

Company	Number	Registered	Town
AR WHOLESALE PRELOVED BALLYMENA LTD	NI744243	2 Oct 2026	Ballymena
NORTH SIDE ACCOMMODATIONS LTD	NI744242	2 Oct 2026	Belfast
EKLIMITED LIMITED	NI744241	2 Oct 2026	Magherafelt
SUREVIEW ENTERPRISES LTD	NI744240	2 Oct 2026	Armagh
NOMAD TAJIR LTD	NI744239	2 Oct 2026	Newtownabbey
KNOCKAVANNON CONTRACTS LTD	NI744238	2 Oct 2026	Newry
NORTHERN COLLECTIONS LTD	NI744237	2 Oct 2026	Craigavon
PORTACH FILMS LTD	NI744236	2 Oct 2026	Newtownards
MONARCHA CONSTRUCTION LIMITED	NI744235	2 Oct 2026	Newry
DONAGHY & CO. HOLDINGS LTD	NI744234	2 Oct 2026	Dungannon

Updated Daily

New Company Registrations
New / Updated Officers
Charges / Mortgages

Updated Weekly

Officer Disqualifications
Accounts (Assets)
Insolvency Filings

Updated Monthly

Company Officer Resignations
Existing Company Changes
In Liquidation

Data as of October 2026.