Electric Supply to garage off

Hi...I have some outdoor lights on my fence which get switched on from the garage.  My dog has completely chewed through the wire which I didnt discover until I went to switch on the lights and now the supply yo the garage is off.  No sockets or garage light or garage door is opening.

There is no fusebox in the garage but there is a fusebox in the house with a 30 Amp fuse which was labelled supply to garage.

However I tried replacing the fuse in that and still getting no power to the garage.  Would the cut wire be shorting out my new fuse as well?

There will be a consumer unit of some description, or at least I would be very surprised if there wasn't.

Could also be an RCD in a separate enclosure, and/or lights could just be from a fused spur in the garage.