Is your unknown fuselage chunk a Sea Baliol?
John
The Cruisair was prewar and had a radial engine. There are a number of similar a/c to this such as the Alexander Bullet and the Swallow experimental by Lake and others designed by Mooney. It might be the earlier Swallow.
John
Yes, most three blade metal airscrews on british early war aeroplanes were DH built Hamiltons (including Spitfires and Hurricanes but with American (Rolls-Royce)rotation). The later ROTOL (ROlls-BrisTOL) props found favour with british engine companies over the DH produced Hamilton Hydromatics.
John
The pitch and bob weights direction on the prop suggests british DH build Hamilton Standard rotation (Bristol), so until we know the diameter it could be either Mercury or Pegasus or early Hercules.
John
It is as others have said a Gemini and possibly the prototype GUS, as this toured Europe extensively in the very early years after the war. GUS can be identified by having large square rear windows rather than the teardrop shapes of the production examples if this can be ascertained on the original photo.
John
GUS’s U/c was later retractable.
JOhn
It’s a Sullivan model K3 Crested Harpy.
John
Another thing which qualifies GUS is it had outline lettering so making it indistinct at a distance. The second prototype had dark lettering.
John
Cream and Red were favoured colours by Miles Aircraft, GUS I’m sure was overall Cream.
Here is the relevant page from Harboros Miles a/c. Showing two styles of reg.
John
Perhaps to conclude, here is a lovely photo from my collection. The copyright is Chas E. Brown and I have added this to the photo.
John

Perhaps losses in/over the Wash and brought into Kings Lynne and hence to Marham.
John
Look in this thread. ACC starter trolley.
John
http://forum.keypublishing.co.uk/showthread.php?t=97373&highlight=trolley+accs
Here’s one that shouldn’t be too difficult.
John

Yes, it was the one on the UK register. At least it’s not “crested”.:)
John
Hanriot 180
John