Thanks everybody for the help in solving this problem. I purchased a JVC KD-R981BT in the end, it cost about £100 plus £15 for a connector.
The stereo came with a JVC to ISO A & B adapter and I purchased an ISO C to four RCA plug adapter. The process was very simple, I plugged the two adapters into the stereo and then into the existing car's wiring, the only extra connection was the red wire from pin 6 on the ISO C1 needed spicing into the switched feed to power the amplifier. This was the yellow wire in the stereos wiring.
Hybrid Mode
