A4 B8, Avant rear fuse housing removal

[ElBrum]

Hello all, newbie here and wondering if there is any advice out there on how to remove the rear (driver side) fuse housing? Long story short I've had a petrol leak in the back and the sound deadening sponge under it is tainted with petrol. Needs to go and cannot get it out with fuse housing in situ (see pic). I can't see any obvious screws anywhere attached to it. I fear its clipped in plastic and will need a trim tool type device but not sure where on housing to lever it and afraid I'll cause more damage! Many thanks in advance

Edited 2 hours ago by ElBrum
speling

[cliffcoggin]

I can't answer your question Ali, but I am keen to know more about the petrol leak. Was the leak from the car's fuel system or from a can of petrol in the boot.