TD5 diesel leak

I think i've posted about this before but its been a while and my memory is terrible.
Ive had a diesel leak for a while now and ive replaced all the seals around the fuel pressure regulator housing and the regulator itself as that appeared to be where it was coming from.
Since doing that the leak appeared to have stopped for a week or so, but now its back with avengance and im going out of my mind trying to find the leak but i cant see anywhere it can be coming from, i just seems to appear on the lower crossmember from somewhere and then proceeds to bleed out all over my drive.
It doesnt seem to do it while running though, or at least its not as bad.
Any help would be greatly appreciated as diesel is getting expensive again.

see my build thread for phantom diesel leak near filter, filler pipe was fine.
Could not believe when i found it, and i needed a mirror to see it, what a PIA ....

I can't seem to find your build thread, but the leak is from the engine somewhere, unless there's a secondary filter I can't see