Hi welcome onboard, Now that's a tricky one
I guess the Matchbox cargo lorries of the 80's/90's were the same details as the landrovers??
There's a few listed on e-bay at the moment if that's any help??
BA released an Airport set in the 90's with a truck, van etc.
What about the Corgi Transit bus??
There was a Matchbox BA coach in earlier colours - a lighter blue.
I hope this helps.