MiddleAges

Correction. There was damage to the thin plastic lug which previous contributors have mentioned. The flap still closes and opens normally without this plastic lug. It merely does not lock. I don't care about this. Any dedicated petrol thief would not be deterred by this anyway.

Just had the same problem on Xmas Eve. I gently prised the flap up a few mm using a couple of the wooden bits from a dismantled clothes peg, they are nice soft wood and the right wedge shape. Couldn't get enough purchase on those 2 little bits of wood, so slid a flat wooden drinks coaster into the resulting gap and prised it up more. The flap popped up as normal with no damage. Good enough to fill up with petrol before tomorrow morning! I can see the offending metal bolt protruding up inside the little compartment covered by the flap. Meanwhile I've put my 3 makeshift wooden tools in the glove compartment for next time. Happy christmas all!