Diploma PLC announced that Johnny Thomson has joined the Company and the Board as Chief Executive Officer. At the same time and as previously announced, John Nicholas, who has been interim Executive Chairman since 29 August 2018, has now relinquished his executive responsibilities and has resumed his non-Executive Chairman role. John Nicholas, having stepped down from the Remuneration Committee while he served as interim Executive Chairman, has been re-appointed as a member of the Remuneration Committee with immediate effect.