Yep did a search cleared the scuttle and got drenched. In revenge I took her up to local Jet Wash and booked 2 minutes in. I got my own back using the High Pressure Rinse. You should have seen the crap that came out. Looked like a pig had climbed in there!!
Clean as a whistle now. Risky I know, but I VERY carefully cleaned off some of the oil and grime from the engine block area. I would never usually do this but JamesV6CDX will understand after he saw the state of it. It was therapeutic to say the least.
So, I now have a sweet Omega 3.0 engine all the balancing and alignment sorted, no exhausts blowing, no leaks into footwells and no leaking cam cover gaskets. With the aux belt replaced I think my work (JamesV6CDX's!) will be done. I dont think I will consider bodywork as she is likely to be a donor car. I like the image though of a filthy looking estate (aspirational image rather than literally 'filthy') which has a brilliant motor and mechanicals running underneath. Using it to go to Slough tomorrow from Bristol and back, then again on Thursday and Friday (200 mile round trips), so I'm glad everything has come together today.
This weekend I will most likely change the oil and oil filter as she will have done about 700 miles since JamesV6CDX cleared out the crap that was in it (was like marmite!). Thanks all of you for your help and advice!!

8-)
