EAT, the sandwich shop chain, which was acquired by private equity firm Lyceum Capital last year, has strengthened its management team with the appointment of Tony Campbell as its new chairman and Sarah Doyle as its first marketing director.

Campbell, who replaces John Herring as chairman of the chain, spent 17 years at Asda as a senior executive and made his name as one of the team that turned the supermarket group around in the 1990s. He also sits on the boards of TUI Travel and Original Factory Shop.

Doyle joins the c125-strong chain from the Digital Property Group, where she was group marketing director. She previously spent five years as a general manager at Premier Foods.