Hey Rune
RAF used several Wellintons over and nearby Norway during the war. For instance during the attack on Norway Apr to June 1940, Bomber Commans used this planes mainly against airfield Sola and shipping along the coast. Among unit used were 9 SQN, 37 SQN, 38 SQN, 115 SQN and 149 SQN.
Regards
Knut
http://www.rafandluftwaffe.info