HaysMac promotes R&D specialist Jack Williams to director

Jack Williams has been promoted to director within HaysMac’s R&D tax and advisory capabilities. Specialising in R&D tax relief, he works to advise clients across sectors including creative, media and technology, fintech and life sciences.

In January 2026, HaysMac celebrated its 25th anniversary. The firm has around 600 people working from offices in London and Cape Town.

This milestone year also saw the strategic acquisition of corporate finance firm Green Square, further strengthening HaysMac’s deal advisory capabilities. Alongside this, the firm acquired Moore DM’s US tax team, enhancing its international tax compliance offering and private client tax expertise to provide seamless cross-border support.

Now, as HaysMac looks to kick on from this growth, it has announced the promotion of Jack Williams to strengthen its R&D tax and advisory capabilities. His promotion recognises both his individual contribution and the firm’s continued investment in strengthening its advisory expertise in response to increasing demand from innovative businesses.

Williams noted, “I’m incredibly proud to step into this role at HaysMac. Since joining the firm last year, I’ve had the opportunity to work with a wide range of innovative, fast-growth businesses, helping them obtain the well-deserved return on their R&D investment and translate that into something meaningful, whether that’s fuelling further innovation, supporting growth or obtaining their next round of funding. I’m excited to continue working closely with our clients as they evolve and to contribute further to the development of our R&D and tax advisory offerings.”

Williams specialises in R&D tax relief, advising high-growth businesses on how to maximise the value of their investment in innovation. He works closely with clients across sectors including creative, media and technology, fintech and life sciences, supporting founders, finance teams and investors to identify qualifying activity, secure meaningful returns on their R&D spend and ensure claims stand up to scrutiny from both HMRC and investors during transactions.

Natasha Frangos, managing partner at HaysMac, added, “Jack’s promotion reflects our continued focus on developing our people and investing in areas where clients need the most support, whilst recognising Jack’s transformative impact on our R&D team and client offering. As businesses look to maximise returns on innovation while navigating increased scrutiny, high-quality, commercially focused advice is more important than ever. Jack’s expertise and client-led approach make him exceptionally well placed to support this, and his promotion underscores our commitment to delivering consistently strong outcomes for our clients.”