Katie Lyons (born 18 August 1981 in Southampton) is an English actress, most noted for her performance as Naughty Rachel in the Channel 4 sitcom Green Wing. She has also appeared in Doc Martin, The Bill, EastEnders, The Catherine Tate Show, The Complete Guide to Parenting, The Boat That Rocked (2009), Boy A (2007) and Him & Her, with a small role in The Crimson Petal and the White in 2011. Since 2013 Lyons has featured as Corporal Lynda Bird in the BBC Three comedy Bluestone 42.