Had it plugged into CLIP today as I had 6 lights come up on the dash. ABS, ESP, SERV, STOP and brake fluid low level. EML also on but knew that was down to a slight blow on the join on the decat pipe. CLIP was showing a fault with 1 of the front ABS sensors but when tested on the multimeter they both showed up as working. So the fault seemed to be between the sensor and the module, once the manifold heat shield was removed to check the wires it was all there to see. It seems the wires weren't clipped back in position on the bulkhead along with the clutch cable which meant they melted on the exhaust manifold and fused together.
Luckily I have a donor section of ABS loom from a phs2 172 that should be swapped over next weekend, then CLIP plugged back in to clear the lights. The STOP and low brake fluid level lights are off now they've been separated from the ABS wires.