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  3. Castlewellan

Company directory · Castlewellan

Trade and construction companies in Castlewellan

113 active trade and construction companies registered in Castlewellan, County Down, by trade.

Trade companies in Castlewellan in numbers

From the Companies House register and filed balance sheets, as of 1 Oct 2026. The longest-established is Maghera Developments Limited, incorporated in 2000.

Companies
113
Active, small or micro accounts
New in the last 12 months
17
15% of the total
Typical net assets
£63K
Median of 80 latest balance sheets
Typical size
1 employee
Median average headcount
Accounts due in the next 3 months
41
Companies House deadlines

Still trading, by year incorporated

Active trade companies in Castlewellan by year of incorporation0510152017: 10 incorporated (still active)1020172018: 12 incorporated (still active)1220182019: 4 incorporated (still active)420192020: 6 incorporated (still active)620202021: 5 incorporated (still active)520212022: 7 incorporated (still active)720222023: 0 incorporated (still active)020232024: 10 incorporated (still active)1020242025: 8 incorporated (still active)820252026: 14 incorporated (still active)142026
Active trade companies in Castlewellan by year of incorporation0510152017: 10 incorporated (still active)10'172018: 12 incorporated (still active)12'182019: 4 incorporated (still active)4'192020: 6 incorporated (still active)6'202021: 5 incorporated (still active)5'212022: 7 incorporated (still active)7'222023: 0 incorporated (still active)0'232024: 10 incorporated (still active)10'242025: 8 incorporated (still active)8'252026: 14 incorporated (still active)14'26

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

Trades in Castlewellan

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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