The other three crews consisted of: In order to shorten the mission distance, the four aircraft were flown to RAF Leuchars in Fife, Scotland, where they were refuelled and loaded with four delayed action 500-pound (230 kg) bombs each.

The operation involved a round trip distance of 1,100 miles (1,800 km), with a flying time of 4.75 hours, making it the longest mission flown with Mosquitos to date.

The bombers crossed the North Sea at heights of less than 100 ft (30 m) to avoid interception by enemy aircraft and navigated by dead reckoning.

Official announcements by the German occupation forces claimed that several British aircraft had been shot down, when in reality a single Mosquito had been lost.

The Mosquito bomber was featured in The Times on 28 September, and the next day the newspaper published two captioned photographs illustrating the Oslo bomb strikes and damage.