William Sweeney - CTA, ATT

R&D Tax Senior Manager

William Sweeney - Menzies Accountant


I joined Menzies as a manager in our business tax team in 2015. I look after the UK tax affairs of a portfolio of corporate clients, providing a proactive and pragmatic service to companies across a wide range of sectors.

These services include supporting clients through their corporation tax compliance cycle and providing specialist advice on a range of UK and international tax issues, including R&D reliefs, corporate restructuring and acquisitions, property acquisitions, and minimising international tax exposure.

As a member of Menzies’ R&D team, I specialise in helping technology and software firms to optimise their tax position, regularly advising on issues such as R&D claims and the Patent Box.

I am a Chartered Tax Advisor and a member of the Association of Taxation Technicians, qualifying as a prize-winner in the Association’s 2011 exams.


My first job
Working for a temp agency, packing cat litter into 5kg sacks.

Alternative career choice
Mechanical Engineering. I still get very enthusiastic when discussing innovative new designs with my clients.

My favourite hobby
Running in the hills and mountains around the UK.