Sorry Paul I just could not resist the opportunity you presented me for mischief.
Must agree with you Paul £20,000 fine and / or 6 months imprisonment is well over the top.
Fortunately Magistrates don't normally go anywhere near this maximum amount or imposing a custodial sentence. They take many things into consideration including what is reasonable and how much the accused can afford.
There is a very large difference between "what can be" and "what is normally".
The deterrent of a large fine is there for the large companies that can afford it or where "intent" was proven.
There are some very crafty people about and the honest sometimes loose out because of the actions of these people.