South Office

Dermot Costello runs the Rickmansworth office where we first established Cox Costello & Horne in 1997. Dermot had previously worked with Mike Cox at Cooper Lancaster Brewers Chartered Accountants in London and we wished to establish a practice outside London and chose Rickmansworth given its convenient location to London and Watford, its thriving business community and relatively affluent surroundings.  Dermot is a Chartered Tax Adviser and is a director of Cox Costello South Limited alongside Mike Cox who is a Chartered Accountant. 

We have a team of approximately 20 professionals providing accounting, tax, bookkeeping, and payroll services to a wide range of clients throughout South East England and as far away as Singapore, Australia, Canada and Europe. 

Our Rickmansworth offices also houses our payroll subsidiary, CCH Payroll Limited, which provides innovative, cost effective and efficient payroll services through the Cox Costello & Horne group.

Located conveniently on the Metropolitan/BR line into London and just inside the M25, the office is well placed to service the needs of our clients. We are just a couple of miles from Watford and are handily situated in Rickmansworth High Street. 

If you would like to drop in for a chat about how we can help, whether with your business or your personal tax affairs, please call 01923 771977.

Cox Costello South Limited
Basing House
46 High Street
01923 771977

A member of the Institute of Chartered Accountants in England and Wales Practice Assurance Scheme under reference C004947411  

Registered in England No. 10472557   
VAT registration no. GB 258 0372 03 

Registered as a firm of Chartered Tax Advisers by the Chartered Institute of Taxation

Our professional indemnity insurance cover is provided by Travelers Insurance Company Limited, 61-63 London Road, Redhill, Surrey RH1 1NA, policy number UC SCR 3993735. The territorial limitations of this policy are work undertaken and in relation to the UK, Ireland, Channel Islands and the Isle of Man. 

Cox Costello & Horne is registered with the Information Commissioner's Office under reference ZA246622.