The 12v accessory socket on my model year 2015 HSE is not working. I’ve checked the fuses that appear to be related to the accessory sockets in the passenger compartment fuse box but all seem to be ok. Can anybody advise the fuse number that covers the socket please?

It may be different on a 2013 model from my one but have a look at fuse 47 in the glove box fuse board. Robin
2008 Range Rover Sport TDV8
Gone:
Jaguar S-Type V8 4.2 Sport
MGZTT 190 2.5

don't these have a fuse box in the boot ? on the right side

Could try this one.

PASSENGER COMPARTMENT FUSE BOX
53 15 Blue Auxiliary power socket luggage compartment.

Cheers
Col

Thanks for taking the time to reply. Fuse 47 has a different designation but I did check if it was blown. I had checked fuse 53 as that is indicated to be the fuse in the manual. However that is not blown. I replaced with a new fuse to double check but still no power. I checked all the 20a and 15 fuses in the luggage compartment and none were blown. It was a good test of the tracker though as I had a call from the InControl monitoring centre.