Yep - pretty much this is it! My understanding of our OFCOM's process is that they do take action against anyone transmitting without a licence where their action cause concern, but since OFCOM took over from the old Radio Agency, they've not taken action against any listener that I'm aware of. Pirate radio, intentional interference with business and emergency services, all have prosecutions and just recently they have temporarily shut down an amateur repeater where there was a complaint of abuse by a user.
The present situation seems a happy balance. We don't have approval to use scanners, but equally the Government don't actually Police it. It gives them the scope to choose to take action on individual cases as the law still exists.
RADIO PEOPLE - Don't read any further, as it's just English history for you US folk to laugh at us.
We're quite good at not using laws in this country. We often don't repeal them.
Here are a few good examples
'willfully and wantonly' disturb people by ringing their doorbells or knocking at their doors - that would be tricky in the US on Trick or Treat day.
Some others for the amusement of US folk
Carrying a plank of wood along a pavement
Flying a kite or sliding on ice or snow whilst in the street
Entering the Houses of Parliament in a suit of armour
Dying in the Houses of Parliament
Keeping a pigsty in front of your house - unless duly hidden
Erecting a washing line across any street
Beating or shaking any carpet or rug in any street. However, beating or shaking a doormat is allowed before 8am
In London, using public transport (knowingly) with the Plague
Handling a salmon in suspicious circumstances
Being intoxicated and in charge of a horse or cow
Firing a cannon within 300 yards of a dwelling house
Gambling in a library
Removing a dead whale found on the British coast - since it automatically becomes the property of the ruling monarch
For a pub landlord, allowing drunkenness in their pub
In Scotland, turning someone away if they knock on your door and require the use of your loo
Allowing your pet to copulate with any pet from the Royal House
Importing into England potatoes which you suspect to be Polish
Finally, as of 1998, causing a nuclear explosion
Some of these thing happen - the Whale one fairly recently, when a number of large whales beached themselves on the the UK, Dutch and Belgian coasts. The stretch of water between high and low tide lines belongs to the Queen - and of course is where anything coming ashore lands, meaning that in years gone by, any wreckage and valuable items would belong to the Crown, and anyone taking it would be guilty of a crime - handy in the 1700's, but a problem when the local authorities wanted to remove the whales - they needed to seek permission! The law also applies to Sturgeon - but oddly the Queen's Receiver of Wrecks (yes, somebody still holds that position) doesn't offer her the whales, still DOES offer her sturgeon!)
We do sometimes abolish things - up until 1901 we had a Royal Household position called Groom of the Stool, and most of the people were Sir, or Lady. Google this one and be surprised!
We also have a strange one in that all swans belong to the Queen, so unless you get invited to dine with Her Majesty, killing and eating one is a £5000 fine and a period in prison!