Back to the future as audit specialist Mason strengthens PEM leadership
With over 25 years’ experience in audit and assurance, Mason joins from RSM UK, where he was a Partner in the firm’s Cambridge office. He brings extensive technical knowledge and a proven track record of working alongside entrepreneurial private companies, mid-market venture capital and private equity backed businesses, as well as international groups across a diverse range of sectors.
Mason began his career with PEM as a trainee, qualifying in 1997. He has spent the majority of his career in the Cambridgeshire market, including senior positions with a prominent mid-tier national firm. This has given him a uniquely well-rounded perspective on the region’s business community and the challenges faced by growing and well-established organisations.
His broad sector insight – advising clients in technology, life sciences, manufacturing, and consumer market sectors – combined with a pragmatic and commercially-driven approach, makes him a valuable addition to PEM’s growing leadership team.
He says: “The city continues to attract exceptional talent and innovation, and PEM sits at the heart of that ecosystem. I look forward to helping clients capitalise on the opportunities this presents and supporting PEM’s ongoing growth strategy.”
Warren Tilbury, Managing Partner at PEM, added: “We’re delighted to welcome Andrew to PEM. His depth of technical knowledge, long-standing connections in the Cambridge market, and experience advising fast-growing and complex businesses will strengthen our team and enhance the support we offer clients navigating an increasingly challenging environment.”

