I have just been speaking with a driver who works for a large well know locally based transport company who have a contract with another locally based company to deliver solely their items (very large volume)
He uses the transport companies van, fuel and benefits from all other associated expenses in relation to the van (ie he doesnt rent it from them and the van costs him nothing) in return his hours are 9am-7pm, and he get £70 a day Gross on a self employed basis.
Is this allowed by HRMC