Franky, Thank you for your reply, It looks like its rear wheels are single, cant quite enlarge the picture enough.
I wonder what gross vehicle weight it would have been. The bodywork reminds me of Hawson Garner of Guildford.
Cheers, Ray.
The Trader weights ranged from 30cwt to 7 Tons Ray and had varying wheelbases across those weights, as you say the one in the photo seems to have single rears so likely no more than a 3 Tonner. Four cylinder engines of Petrol or Diesel up to 4 Ton then the 5 Ton could have six or four cylinder engines and the 7 Tonner six cylinder with a five speed box option with a two speed axle also an option on models 3 Ton upwards, so plenty of choice for customers back then. Franky.