Thorn EMI Proton Detection System Commodore PET (UK)

A friend of mine who works for a large local organisation rescued this fascinating piece of kit from being thrown in a dumpster. It is a modified PET (the later series without the cassette drive) with the "Commodore" name strip replaced with a "Thorn EMI" one. It is internally modified with one or several? more boards mounted in it, and there are several ports which have been added to the right hand side - these include two BNCs which IIRC were Analogue In and Analogue Out, a 25-pin D RS232, and several others I don't recall. The machine also has new ROMs in it - however the original ones are stored within it in a small perspex box attached to the baseplace (how thoughtful is that?). I didn't get to see it run. There is also a Commodore dual floppy drive for the unit with it (using half-height drives). Another contact I have at this place is a collector of old computers so I suspect he will have his eye on this, however he has a PET in his collection already, so if this unit is of particular historical importance and someone wants it for their museum where it will go on display (Witchy? Jules?) I might be able to get it for you on this basis. I could certainly try. Is anyone interested?