Yeah well .. stuff happens!
It turns out that the engineer offered £2k, cat c which I accepted, thinking I had £250 excess so expected £1750 overall, and I could keep the Disco .. good deal I thought as opposed to £2k - £250 and get the Disco taken off me!
If I'd realised I could (legally) have stripped the Disco of good parts before they took it away I would have done so, but couldn't get any crap wheels in time to swap which meant my new ones (£540 worth) would have gone too ... too much to lose, so accepted the cat C offer.
It then turned out that Cat C attracts a 26% 'fee' which is deducted from the 2K, then the excess is also deducted, which turned out to be £350 not £250, so in the end I'm getting £1160 .. but the Disco is still mine and eligible to go back on the road after repairs. So with only £1k it ain't worth looking at anything else so we're going to have to do up this one!
Too naive me, not having gone through this sort of thing before ..
No worries, looking forward to it now ..