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Company directory · Carmarthen

Trade and construction companies in Carmarthen

369 active trade and construction companies registered in Carmarthen, Carmarthenshire, by trade.

Trade companies in Carmarthen in numbers

From the Companies House register and filed balance sheets, as of 1 Oct 2026. The longest-established is John Williams & Co.(Crwbin Quarries)Limited, incorporated in 1948.

Companies
369
Active, small or micro accounts
New in the last 12 months
59
16% of the total
Typical net assets
£20K
Median of 264 latest balance sheets
Typical size
2 employees
Median average headcount
Accounts due in the next 3 months
100
Companies House deadlines

Still trading, by year incorporated

Active trade companies in Carmarthen by year of incorporation02040602017: 16 incorporated (still active)1620172018: 12 incorporated (still active)1220182019: 15 incorporated (still active)1520192020: 18 incorporated (still active)1820202021: 19 incorporated (still active)1920212022: 20 incorporated (still active)2020222023: 19 incorporated (still active)1920232024: 22 incorporated (still active)2220242025: 37 incorporated (still active)3720252026: 47 incorporated (still active)472026
Active trade companies in Carmarthen by year of incorporation02040602017: 16 incorporated (still active)16'172018: 12 incorporated (still active)12'182019: 15 incorporated (still active)15'192020: 18 incorporated (still active)18'202021: 19 incorporated (still active)19'212022: 20 incorporated (still active)20'222023: 19 incorporated (still active)19'232024: 22 incorporated (still active)22'242025: 37 incorporated (still active)37'252026: 47 incorporated (still active)47'26

Companies still active today, by the year they were incorporated; 2026 is the year so far.

Trades in Carmarthen

Every company on these pages is an active private limited company that files small or micro-entity accounts. Each one has to deliver accounts to Companies House within 9 months of its year end, pay corporation tax 9 months and 1 day after it, and file a CT600 with HMRC within 12 months.

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