Its been a while, so i thought i'd give a quick update.
Bought a rear sensor through Volvo, had my local guy fit it, but that didn't fix things, car still limping along.
According to his scan tool, DPF is full of soot.
Local Volvo dealer told me that No genuine DPF's in the country (and could be waiting months), they couldn't even be bothered giving me a quote to supply and fit one. I've sourced a new non genuine DPF, car is back with my local guy to fit it and fingers crossed i'll be up and mobile again.