Ashton is primarily a litigator specialising in construction and property matters, property development issues including resolution of party wall disputes, and enfranchisement.

His clients include property developers, contractors, specialist subcontractors, and property companies and landlords. In addition to property and construction matters Ashton also advises a number of clients in the sporting world on commercial issues including sponsorship agreements and image rights and related disputes.

Ashton is a fellow of the Chartered Institute of Arbitrators and a member of the Adjudication Society, Pyramus, and Thisbe Club, and is a DAS Business Scheme approved arbitrator.