Next job is to tackle the hot start issue. Starts on circa 3 crank when cold but takes 8-12 cranks when warm and left for 15-45ish mins. The idle can be intermittently rough (just a minor vibration you can feel but can't see on the tacho - VAG-COM sees it as something like 640-680 on idle.
So far I have:
Read codes (cam shaft sensor), replaced cam sensor, crank sensor, new FPR valve, new thermostat, new thermostat sensors, new rad fan switch (unrelated), new sparks, leads, coilpack (cracked) and fuel filter. I'm left with fuel pump and injectors - feel free to chip in