I remember them being red, (in fact Dinky Toys made a model of them) and I remember them being light cream, but I don't remember them being light cream with red wings. In the back were ropes and chains and things for breakdowns, but they did have one with a crane on the back.
Other vehicle types have come and gone, including Ford Transits and Galaxy's, but the Land Rover in various forms was the vehicle of choice for many years.
Here are some of them...
Description: This preserved example is thought to be ex-tunnel. It carries a label 'Coachbuilt by Ian Cooke'.
Description: Land Rover's (or Defenders) can pull most things - but this is a bit unusual.
Description: More Land Rovers.
Description: Ford Galaxy. I've seen these with over 100,000 miles on the clock and still in service.