Quick update
The bulbs were both ok and after a quick fiddle they were both dodgy connections :/
They have been sorted though!
Anyway to the fuel leak! The two pipes to be changed were prepared...
and changed.
Unfortunately on trying to start it up there was a lot of petrol peeing out the back of the car!
On further inspection the diaphragm pipe had totally ruptured due to rust!

Not good!
It's possible that it was a small hole around this pipe that was leaking before and removing the old pipe ruptured the outer casing
Luckily I had a spare!
Still rusty as hell but no holes
Two very rusty nuts later (ooer) and were back in business!
Ready for the re-test next weekend and should pass with flying colours now