...mine's leaking!

What's the best way to get to it? Is it both headlights out, grill off? I've had the driver side inner plastic plane from behind the wheel but cant see how it comes out..thanks

I think access is via the wheelarch, not bumper off. Not certain though. And it seems a pretty daft place for the washer bottle!

Yup - access is via the wheelarch. Hopefully these diagrams will help.

I've taken that first inner panel off directly behind the washer bottle and there's no way near enough room to get the bottle out...does the wheel then the entire plastic inner skin have to come off ???

According to the above, yes, but I've not tried it myself.