Chisnall Comer Ismail & Co (CCI) was formed in Brighton in 1994 by the 3 founding partners.

They wanted to provide an Accountancy and Tax service firm that they themselves would want to be clients of. They set out to achieve this, first starting on the top floor of Maria House in Millers Road in Brighton and eventually expanding to the position of taking over the entire building where they remain today. They achieved exactly what they wanted to and they haven’t stopped since!

Present day CCI is still operated by 3 partners including founding senior partner Robert Comer. He is now joined by Tom Humphries and Alison Harrity Usher along with a strong support team of staff ranging from accountants and bookkeepers to payroll and tax specialists. 

Our team is experienced in advising a diverse range of business sectors and we would welcome the opportunity to meet with you for a free initial consultation.


Robert Comer FFA FIPA - Senior Tax Partner

Robert has worked in Tax for over 40 years. Initially this was with HMRC as a tax inspector working on technical matters and investigations. This included representing HMRC at Commissioner hearings.

Subsequently he moved into private practice and eventually with two friends created CCI in 1994.

Robert undertakes work in all aspects of taxation including compliance, planning and efficiency. He also has considerable experience in dealing with contentious issues with HMRC.

In his spare time Robert enjoys Football, Golf, Skiing and Family life.


Tom Humphries ACA FCCA - Audit and Accountancy Partner

Tom started his career in Accountancy in 1999, joining CCI straight from sixth form college in Brighton. He qualified in 2004 and progressed to become a partner in 2009.

Tom is a Fellow of both the Institute of Chartered Accountants in England and Wales and the Association of Chartered Certified Accountants and a Senior Statutory Auditor.

Tom works with a diverse range of clients, offering advice in all areas of Accountancy, Audit, and Tax. He particularly enjoys working with owner-managed businesses, helping business owners navigate the various challenges they face on a daily basis.

Outside of the office Tom can be found watching live music, supporting Brighton & Hove Albion Football Club and playing golf. He also thoroughly enjoys watching his three children play a multitude of sports, and of course spending time with family and friends.


Alison Harrity Usher ACA FCCA - Partner

Alison started her career in South Africa, moving to the UK in 1999 and joining CCI in June 2003. Alison is a member of the Institute of Chartered Accountants in England and Wales and a Fellow of the Association of Chartered Certified Accountants. Alison became a partner at CCI in July 2019.

Alison has extensive knowledge of all aspects of Accountancy, Audit and Taxation. Alison has a passion for helping owner managed businesses thrive by supporting them with practical accounting solutions and is enthusiastic about technology and how it can help clients to gain insights into their business and save them valuable time.

Alison is a keen Rugby fan and supports both the Springboks and Red Roses.


The Partners are supported by their managers and a team of highly qualified, dedicated & experienced staff.