"In the court's view, this is a hopeless appeal. Here are two experienced police officers who have given estimates of a speed of a car. Even if they are five miles an hour adrift, the defendant was still doing forty miles an hour. As I say, the appeal is quite hopeless and will be dismissed."
"A person prosecuted for such an offence [that is a speeding offence] shall not be liable to be convicted solely on the evidence of one witness that in the opinion of the witness the person prosecuted was driving the vehicle at a speed exceeding a specified limit."