Presumably one of the undamaged cars from the set that was involved in
the 7/7 attacks?

Yes, although not entirely undamaged - see http://snipurl.com/tp4t

Thanks for that, John. However - if the tarpaulin-covered vehicle is
566, I'm very surprised that it hasn't been moved to somewhere more
secure (in case any more forensic bods wish to crawl over it again), or
at least hidden out of view, as I would expect LU/TPTB to do with
vehicles such as this.

Cheers

M