We had some strange ones introduced to the Department for Environment, Food and Rural Affairs over the last few years.
It's illegal to disturb a pack of eggs when instructed not to by an authorised officer. This was part of a detailed set of regulations last year controlling the production and marketing of eggs and of farmyard poultry chicks.
in 2007 they updated the law that says you are not allowed to offer for sale a game bird killed on a Sunday or Christmas Day
The Natural Environment and Rural Communities Act 2006. says you're not allowed to sell a grey squirrel, ruddy duck or other types of flora or fauna not a uk native. Mind you, Japanese knotweed is pretty bad in places, but who's been offering grey squirrels for sale. Is it such a problem they had to create a new law for it?
There's a 2004 law about importing polish potatoes and pretending they are English.
How about the reintroduction of allowing imperial weights and measures.