Appeal for Information.- North Western Gas Board

I will be restoring Granville to be (as far as I can) a replica of the van that my Father used to drive (that'll suprise my Mother) so he will be in Th North Western Gas Board colours of Red with Black Wings,and a Cream Oval with the Legend North Western Gas Board Gas and Coke Service,together with Decals of "Mr Therm"..if anyone has more info, fleet numbers etc, particulary with regards to Clitheroe and the vans that came out of there, I would be grateful.
salsaalegria at tiscali.co.uk