dhobbs said:You can remove the cover in front of the rear wheel arch but needs small tools.
Best to jack it up to see what you’re doing.
Just done exactly that
Poured some hot water mixed with fairy liquid down from the top and its now draining, but when trying to insert the metal rod from underneath, it still seems to be getting stuck going up. Perhaps the drain hole is too small for my tool? Either way, some debris came out and it seems to be draining OK, so time will tell if that's sorted out the boot leak.
Cheers all