You might be in the clear as far as civil law is concerned but it's possible that criminal law might come into play here:
"A person is guilty of an offence if he uses, or causes or permits another to use, a motor vehicle or trailer on a road when . . .
the weight, position or distribution of its load, or the manner in which it is secured, is such that the use of the motor vehicle or trailer involves a danger of injury to any person"
[Section 40A, Road Traffic Act 1988, as amended by the Road Traffic Act 1991]