56 Halifaxes from 420, 425, 426, 427, 429, 431, and 432 squadrons were ordered to attack the coastal guns at St. Valery en Caux. The crews were over the target at between 5,000 and 8,000 feet, releasing 602,000 lbs of high explosives. According to reports, the attack was not successful.

F/Lt M. Bryson from 425 squadron returned early as the port outer was u/s. They landed safely at base on 3 engines.

F/O J. Barker from 432 squadron returned early as their hydraulics were u/s.
 

Also on this night, 18 Halifaxes from 428 and 434 squadrons were ordered on a mining operation to the Frisian Islands. The crews were over the garden at between 10,000 and 15,000 feet, sowing 33@1500 lb mines.

F/Sgt F. Wood from 434 squadron returned to base early.