Edmund Walker was of a Yorkshire landed gentry family that had owned at various times Aldwick Hall at Rotherham, Silton Hall at Northallerton, Ravensthorpe Manor, and Mount St John, at Thirsk.

[6] He was an original cast member of Z-Cars, playing PC Bob Steele, but left after just over a year in the role.

His other television credits include Colditz, Space: 1999, and a number of other series, such as Hart to Hart, The Greatest American Hero, The Fall Guy, The Adventures of Sherlock Holmes, Conan the Adventurer, Star Trek: The Next Generation,[7] The Winds of War, War and Remembrance and Murder, She Wrote.

From the mid-1960s to the mid-1970s, Kemp had a prominent film career, usually appearing as second male leads or top supporting roles.

His films include Dr. Terror's House of Horrors, Operation Crossbow, The Blue Max, Darling Lili, A Bridge Too Far, The Seven-Per-Cent Solution, Top Secret!