Does anybody know about the workings of the headlights washer we got hit in a car park and it appears the drivers side has lost a spring that holds the washer cover in place so keeps opening any help appreciated 

The headlight washer cover or cap is spring loaded. When activated, the washer pump pushes through the aperture and the spring loaded cap then shuts when it retracts.

Pretty sure you’re going to have to remove the bumper to fix. Sounds worse than it is, usually held in place with Torx screws, including on the wings with small bolts. You’ll probably need to remove inner wheel arch liners to access.

Part here. You might be lucky and fit with bumper on. https://www.lllparts.co.uk/product/8p0955339/audi-8p0955339-spring-clip

Thanks Spartacus that’s exactly what I thought  have bought some springs and covers of a well known auction site so let’s hope they fit, thanks for the help