Have you got 'gap insurance'?
The value you get paid out will be the value of the van without the finance.
Although you may be able to recover that from the other party.
Also, the finance won't be that much.
It's not the 5 year settlement fee (if that's the length you took out) you'll have to pay £6,500 on finance paid back 6 months later-not gonna be much fella.