Once president of group research at Roche Holdings, Knowles now joins the board at Adaptimmune as a non-executive director.
He joins the firm's current chief operating officer Helen Tayton-Martin, who will become executive director.
New appointments at biopharma and equipment companies also feature in this week's column.
Plus other people on the move in the pharma industry in this week's column.
People are on the move at Baxter, Merck & Co., Johnson & Johnson, and elsewhere in this...
Twin changes at AstraZeneca's MedImmune kick off this week's gallery, as well as jobs news from Europe
UCB has more than drugs in its 2015 pipeline, while BUPA and biotechs hire new recruits.