You're right, further research indicates more likely a W.8 of unknown exact sub model. There were a bunch of different engine combinations between twin and 3 engined. The Handley Page part was too easy though.
Might as well finish this thread off. Tri160 was pretty close.
The airplane is apparently a Handley Page HP 33 "Clive". It all looks a bit messy as there were similar HP 33's, 35's, 36's, with bomber versions and troop transport versions.
Anyway, one of the military transports ended up civilian registered, sold to Alan Cobham's travelling aerial circus. That's the plane in the photo. So unlike most photos of drag-offs from similar planes, that could well be a civilian jumper.
(As for the later photo of a sheep in a parachute, it is unrelated, and was from the Italian military resupplying their troops with fresh meat by air in Ethiopia.)