Hi Sean , you got me thinking too so I checked my library and found what you did,the Gilbern GT 2+2 59/67,the Genie 4 seat 66/70 and the Invader 4 seat or estate,69/74 I am sure I went to the factory once it was up in the valleys above Cardiff and it was half a dozen lock up garages. the Peerless GT 4 seater 57/60 and the Warwick 4 seat which was mainly the peerless under a different name made by the same man and the Gordon Keeble 64/67, i drove a GK once up to London for a customer of the garage I was an apprentice at, fastest thing I had driven did 135mph up the M4 when it was only the last bit of it into London.I love the GK badge, its a Turtle.
You forgot to mention the very lovely French hybrid builder Facel Vega, stunning cars.
Adrian