UK Companies in Belfast
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.
Note: Location filtering uses the registered office address from Companies House. Many companies register at accountant or formation agent addresses, which may differ from their trading location. NI company numbers typically start with "NI".