Mark is a Chartered Accountant with extensive public practice and commercial experience.

A BSc in Psychology from Warwick University was followed by ICAEW Accountancy training with Hugill & Co, a West End firm now part of Wilkins Kennedy. After a spell in their Cambridge office, dealing with growth companies and start-ups and a move to Harrow, along the way earning first time passes in all Professional Exams, Mark was invited at the age of 27 in to Partnership in a start-up Accountancy Practice, gaining good experience and recognition for business development and client and staff management.

10 years later, in late 2006, Mark left the Practice to found a new specialised Accountancy business, DIVERSET, focusing on the needs of Entrepreneurs and Growth companies.  Mark now specialises in Performance Management Information Systems and Business Growth. An AVN Mastery Graduate and Registered Auditor, Mark also acts as non-Executive Director for a number of businesses, including in UK based manufacture & retail, and digital marketing.

Mark has been involved in local & regional community groups for many years, chairing Pinner Round Table, has served as Treasurer to the Governors and  Chair of Finance to Bishop Ramsey CE School and Treasurer of his Church. He is married, has two sons and is a keen Warhammer and Computer Gamer.


Helen is a Chartered Accountant and Registered Auditor, experienced in Management Information Systems and complex payroll.

She also acts as the Diverset Practice Manager.

Helen trained in a substantial local practice in Harrow, followed by stints at Letchfords and Kingston Smith, gaining wide exposure to many business sectors.


Sean is a qualified Chartered Accountant and our Client Manager, looking after, advising and helping a range of clients with their regular management information and compliance needs, looking after some of our more complex cases and introducing them to some of the methods and approach to accountancy and finance that marks out a great Accountant.


Hannah has been part of the DIVERSET team for 10 years, and is our Office and Payroll Manager, and our all round database guru.

She also gets involved with bookeeping assignments both in house and on site.

Hannah can be spotted outside of work chasing after her daughter, or on the netball field.


As a Chemical Engineering student at Cambridge University, Will has worked his holidays with us, gaining a grounding in bookeeping and payroll software and processes, business communications, and some exposure to the wider context of business decisions and cash flow planning.


Our Office

Ferrari House, 258 Field End Road

020 7148 1552