Focussed on your success

Key People:

Our people are our greatest asset. They make our company, our services and our culture what they are. Exploring our key people lets you discover what working with Thomas Croft is really like.

Mark Thomas


Mark co-founded Thomas Croft Limited in 2002 with Tony Croft but has been an accountant and tax adviser for over 25 years. He has always focussed his attentions on dealing with individuals and small businesses (sole-traders, partnerships and Limited companies).

Over the years, Mark has built up a close working relationship with numerous clients - some of whom have been clients for as long as Mark has been an accountant. However, Mark has always been one to promote a relaxed working relationship and therefore tries to avoid being the accountant stereotype. He is on first name terms with all of his clients and will happily meet with clients outside of office hours, if this means that his clients don’t have to take time off to see him. He continues to work on a one-to-one basis with all of his clients, whether this is to help someone complete their annual Self-Assessment Tax Return or to work closely with a growing business to help them achieve their goals.

With many years in the business and having such a large range of clients, Mark has developed a wealth of expertise that can provide clients with the assurance that he has the requisite skills to provide a first class service.

Outside of work, Mark is a (semi-)keen runner! And, despite his questionable skills in some sporting areas, continues to enjoy tennis and squash.

Tony Croft


Tony studied Accountancy degree at Solent University. He spent 3 years working in Winchester gaining post qualifying experience before joining Mark in June 2002 to form Thomas Croft.

Tony lives with his partner Grace and his 2 girls Isobel and Phoebe. Tony’s other roles include Chair of Governors of a Primary School and Commercial Director of Blackfield and Langley FC.

Mark Witt


Mark Witt joined Thomas Croft in 2014 to fill the much-needed role of Tax Enquiries and Investigations specialist.

Mark started his career in 1991 at HMRC, so has seen tax enquiries from the revenue side of things.  Since leaving the revenue in 1997, Mark has worked for various firms on the south coast, building up an enviable track record of helping companies under tax enquiry or investigation, particularly in the equine world of studs, horse racing, gambling and sponsorship.

Mark knows that there is always more than one way of looking at a financial situation: he therefore is constantly seeking the different perspective that will help to defend his client and resolve the enquiry in their best interests.