Hi, mine was a 4236 Perkins diesel, auto box, vehicle had 33000 miles on the clock and in great condition. They are a rare truck but if yours is wanting lots of work, eg brakes, rusty cab, with welding etc, servicing, tyres. Its an expensive buy. I would think you will have a long wait at £10 thou. It also depends how quick you want the sale. I would try £6000 as a realistic figure. All the best with the RB44, Nigel.
Put more photos on stating good points and bad may help too and list what equipment it has starting with the engine, gearbox, dynamic brake on prop etc.