Britain and France fought in the Korean War, 1950-53. Which jet fighters could they send to best match the MiG-15 and the other North Korean fighters? The Gloster Meteor isn't going to cut it. Maybe the Supermarine Swift and Dassault Mystère (both introduced early 1954) can be expedited by seven or eight months? Without these, it's Attackers, Vampires, Sea Hawks and Ouragans. Outside of Britain and France and purely hypothetically, Europe's best match to the MiG-15 may be the Saab 29 Tunnan.
As it was the best Commonwealth jet fighter in Korea was the Canadair Sabre.