What UK aircraft looks like an Islander but with twin fins? Driving on the M40 recently just south of Banbury, England, I saw a distinctive smallish plane I'm trying to identify&nbsp;&mdash; probably military from the dull grey/green color.

It looked a lot like the Islander, but:


It had a tailplane and twin fins
The tail boom was narrower in proportion to the body, and more distinct from the body than the Islander's is (I think I'm misremembering or mis-saw that part&nbsp;&mdash; I was driving on the motorway, after all)
The body may well have been a bit bulkier (or that may have been an illusion caused by the narrowness of the tail boom)
The wings had a normal-looking span for the size of the aircraft but were shorter front-to-back than seemed normal (to my very-much-not-expert eye)


Like the Islander it was a twin prop with a fairly pointy nose.

Does anyone have any idea what it was?
It sounds an awful lot like a C-145, or maybe the 'civilian' version (it's primarily used by militaries), the  PZL Skytruck.

Source

It's used by the U.S. Air Force, so seeing it in Britain would not be surprising - all 3 of the U.S. Air Force's RAF joint use bases are within 100 air miles.


It's twin-engine, with a tailplane and twin fins
Its tail boom does narrow somewhat and distinguish itself, as seen here
It does have somewhat of a chunky body
The wings are fairly thin (front-to-back)