I guess path of least resistance would be the key.
IF I had a prang, so long as I could get the remains of the TV home, then obviously it fell off the wall while I was trying to fit it - home insurance.
IF the car was totalled and/or I was unable to get to the TV or there was no way in hell that simply fell from a wall etc, I guess that is where it gets more interesting.
I'm confident with the bit I posted a little earlier - looks like if I'm transporting my own goods between certain locations I am covered. I only had to "name" items with a value over £1500 (I've paid £1499 for the TV which will become £1349 once rebates have come through - but still under £1500), and it is being moved from one location with a permanent resident to another location with a permanent resident.