Seven firms handle regulatory-compliance law in Guernsey — a quarter of the island's 27 legal practices, all LLPs in St Peter Port. Mourant's Guernsey history traces to Ozannes in 1842; Collas Crill formed by a 2011 merger. Six belong to Guernsey Finance; six carry parallel offices across BVI, Cayman, and Jersey. —
To auto-generate a shortlist, pick from the options below (or tick businesses from the directory to build your shortlist manually).
St Peter Port·Professional Service
Part of Mourant (headquartered in Jersey, 22 Grenville Street, St Helier)
✦Oldest in this niche
184-year heritage (1842)
International offshore law firm with a major Guernsey practice covering legal, entity management, and regulatory services.
St Peter Port·Professional Service·Est. 1998
Part of Ogier (headquartered in Jersey)
✦Largest team: 1300+
The Guernsey office of Ogier, an international offshore law firm offering legal, corporate, fiduciary, and consulting services.
St Peter Port·Professional Service
✦Active since 1939
International offshore law firm established in 1939, serving corporate, institutional, and private clients across Guernsey, Jersey, BVI, Cayman Islands, London, and Singapore.
St Peter Port·Professional Service·Est. 2011
Offshore law firm headquartered in St Peter Port, offering legal, trust and corporate services across Guernsey, Alderney, Sark and international jurisdictions.
St Peter Port·Professional Service
Part of Walkers Global (international law firm network operating across 10 offices in the Americas, Europe, Asia and the Middle East)
International offshore law firm in St Peter Port, specialising in investment funds, corporate M&A, and financial regulatory work.
St Peter Port·Organization
✦106-year heritage (1920)
Law firm registered with the Guernsey Financial Services Commission as a Prescribed Business - Legal Professional, advising on- and off-shore corporates, financial institutions, and high net worth individuals.
St Peter Port·Professional Service
✦128-year heritage (1898)
Offshore law firm with 21 Tier One rankings in Legal 500 UK, specialising in corporate, finance, and dispute resolution, with roots in Guernsey since 1898.
St Peter Port·Professional Service·Est. 2010
Part of Appleby (global offshore law firm)
St Peter Port office of global offshore law firm Appleby, specialising in corporate, dispute resolution, private client and trusts, and regulatory legal services.
St Peter Port·Organization
GFSC Primary Licensee and Investment Licensee, licensed to conduct controlled investment business including collective investment schemes, general securities, and derivatives.