Hi - Update:

Checked the grommets and they are all seated correctly. So purchased some liquid rubber and coated the grommets and that part of the engine bay in rubber. I also coated the seams around where the aircon pipes go into the car. It has since rained quite heavily and so far no leaks.

I have purchased a decent batch of Silent Coat - so when it arrives I am going to strip out the front of the car and re-soundproof the floor.

The oil leak - Update:

Had the car up in the air in my mates garage on Saturday. Cleaned the underside of the engine with brake fluid and an air line and waited with the engine running. Seems the oil leak is coming from just above the sump - right next to cam belt - possibly the vvt assembly (mechanic said that).

Now I would love to strip the engine and sort it properly - but I don't have the knowledge or experience - so for now I have changed the oil, spark plugs, oil filter and have shoved a tin of wynns engine seal into the oil. It apparently takes 200 miles before it works properly. I await with baited breath.

Note - I also changed the fuel filter - which is seems had not been changed since day one - the fuel ran out of the old fuel filter - BLACK - so all that crap is in the fuel lines.

Recommendations thus far are to replace the tank, fuel lines and have the injectors refurbed. Unless there is another way?!

Sorting out the body this week (rust) and polishing - got my G3 and polisher.