Sorry to hear that mate, just been hobbled by a massive pothole on Rook Lane in Surrey.
I'm in the same boat as you, alloy dented and will have to be replaced, tyre wall on mine is defo damaged and has a slight bubble.
I've taken photos like yours, this beast of a pit is 70cm+long x 42cm wide x 12.5cm deep!
Definitely deeper than the required 40mm
I'm stunned the tyre didn't pop, was doing about 40mph as it's a narrow windy road.
The noise was unbelievable thought I'd ripped the wheel off.
So far suspension seems ok but will have to get everything checked over.
From what I've researched if it's not yet been reported and they have performed inspections as per the national code you may not be successful.
However there are exceptions:
If there was only a driver and no inspector this has previously been considered insufficient to spot all potholes.
Speed of surveying vehicle.
If someone has already reported it you may stand a better chance as the local council have to repair it within a defined timescale if it's of a certain size.
You will need to submit a freedom of information request to the council to find out if it's been inspected etc but these are free.
If you haven't already get onto potholes.co.uk some useful info on there.
I'm going to be a persistent but polite pain in the a**e and see if I can claim on mine.
Good luck mate.