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The management team

Gary Millner - Chief Executive

Gary works closely with the board of trustees to determine our long-term strategy and with the senior management team to oversee all aspects of the organisation and its governance. Before joining Tax Volunteers in 2015, Gary spent nearly 20 years in the financial services industry before moving to the not for profit sector in 1999. Since then he has held senior Director roles at three different charities as well as serving as a Director at their associated trading companies. Gary brings with him a wealth of experience including finance, human resources as well as commercial and operational experience.


Valerie Boggs - Advice Director

Valerie is responsible for the delivery of tax advice by the staff and volunteers to those who need help. Valerie also provides feedback to HMRC and the CIOT’s Low Income Tax Reform Group in respect of tax issues for the older taxpayer, so that all older taxpayers can benefit not just those who contact the charity. Valerie started her career as a Chartered Accountant before qualifying as a Chartered Tax Adviser and specialising in the tax issues relevant to a portfolio of High Net Worth clients. Subsequently Valerie ran her own business supplying the accounting, payroll and tax services needed by small businesses, both sole traders and limited companies as well as providing for the tax needs of individuals.


Jasper Dorgan - Director of Development

Jasper’s area of responsibility covers our fundraising and marketing and promotional activities including service development initiatives. After a career in commercial advertising, Jasper moved into the voluntary sector, covering fundraising and marketing for a national charity and service development for a rural community organisation.


Mark Tipping - Director of Finance & Infrastructure

Mark is responsible for the Charity's finances, as well HR and Infrastructure (IT, telecomms, property). Before joining Tax Volunteers in 2014, Mark worked for the Meteorological Office as an Accountant, and in the Third Sector as a Project Manager and Fundraiser. He is a Fellow of the Association of Accounting Technicians.