Managed to confirm it really is loosing power/lacking power today going up 2 hills.
Took the bleed screw out of the fuel filter and pumped the lift pump manually to see if its the lift pump, the nice splurge I got out the top of the filter would suggest the lift pump is OK, though it took a few pumps to achieve, would that indicate air in the fuel system?
Took the turbo/FIP hose off too to check that for any obvious damage, the cable (not rubber) seems to be in good condition, no obvious splits and the like.
Unfortunately, in taking it off/putting it back on I think I've knocked a connection somewhere because now I just get a click when trying to turn it over
, didn't fancy going hunting in the dark/cold rain. I did give it half a second on the starter to be able to pump the lift pump so likely a fuse or something knocked loose by the turbo hose on/off.
Suppose once I sort that it may be a drain the fuel tank job.