When William Killick boards his transportation plane to Greece the C-47 Dakota shows "D-Day stripes" (aka "Invasion stripes") on fuselage and left wing. Historically and consistent with the period setting of the story - the "Blitz" - this must have been in spring 1941. However, these markings were not in use before June 1944.
When William Killick boards his transportation plane to Greece the C-47 Dakota shows (incorrectly) black and white "D-Day stripes" on fuselage and left wing. In the stock footage (probably ex-RCAF ZA947 operated by the "Battle of Britain Memorial Flight") used for the subsequent takeoff shot the C-47 has no markings at all neither on wings nor the fuselage's underbelly.
The air war scenes outside (as opposed to the opening film scenes in the Underground) purport to show London being bombed during the Blitz. The scenes actually were other film footage as Germany used no four motor bombers during the Blitz. The scenes were actually of Allied B-17s bombing Dresden, Germany at the war's end.
Dylan Thomas: Not for the proud man apart from the raging moon I write on the spendthrift pages, nor for the towering dead with their nightingales and psalms, but for the lovers, their arms round the griefs of the ages.
The Scenes were filmed in
New Quay for the first week Lampeter Monday & Tuesday (i was there)
Tenby for Wednesday & Thursday. They also filmed in Cardigan. Now
they go up to Pinewood Studios in london to film the rest hope this has
helped anyone!