The requirements have changed, on the building of Sizewell 'B' I was living in a caravan at the same time as my family were living at home, so although you can use the home licence to watch TV in a caravan you can't do it at the same time as using it at home. I did not want to watch TV however I wanted to use the TV as a monitor for my Amiga computer, so I made enquiries as to what was needed to make a TV classed as not a TV, my thoughts were putting a blank over the aerial socket.
So I found out that in Norfolk an old lady had been given a video recorder, and she had a black and white TV so a black and white licence, and she was taken to court for using a colour receiver with a black and white licence as the video received in colour even if she only watched in black and white, I actually talked to the magistrate who ruled on the case, she was found guilty as if he had dismissed it then a common law ruling would have resulted, but only fined £5.
Since that date we went digital and all set top boxes receive in colour so you can't have a black and white TV any more if going by the above, yet a black and white licence is still sold, so clearly to be able to use a black and white licence the law must have changed, and the wording of the licence has changed as it referred to apparatus used to receive the broadcast signals, which has to be the aerial not the TV, that has now changed.
The change would have included any computer capable of connecting to the internet which would mean every firm using computers would have required a TV licence it talks about broadcast TV it does not need to use radio waves, so cable TV still needs a licence. Now there was, don't know if still there a website called Catch-up TV, this web site allowed you to watch through the computer live TV, so in spite of the name is was broadcast not peer to peer, so it still needed a licence.
So it is the "Broadcast" bit that matters, I can as a radio ham send TV signals to another radio ham and receive signals from another radio ham without a TV licence, just my amateur radio licence is required, but as a radio ham I am not permitted to broadcast, it has to be peer to peer, the rules seem odd some times, it is the same with CB radio, so if I call another ham and make contact and say there is an accident on M6 junction 10 that's OK, but if I simple key the mic and say hay guys there is an accident on M6 junction 10 without first making contact with some one, I have broadcast so broken the law, even though I know loads have listened in when I made contact first so result is same, one is classed a peer to peer the other is broadcast.
The problem is you on the receiving end don't really know if broadcast or not, little like the music sharing, in the days when you could down load an app to share music there was a problem in only the person uploading knew if copy-write or not, but it was the person down loading who was considered as stealing the music, it is same using catch-up, you the user does not really know if you are getting a broadcast program which may be broadcast every 5 minutes and your linked to one broadcast slot, or if true peer to peer, and your downloading independent of anyone else.
As to if the BBC will take you to court is another story, but they are in trouble with the licence fee, they are not getting the revenue they need, so if they find some website has been broadcasting then they could in theory fine anyone without a licence who has down loaded from that site.
It seems there is only one way to ensure you have not broken the law, and that is not to watch TV. You may find a loop hole, but problem with loop holes is once found they are sewn up, there will be an amendment to the law.
So back in those Sizewell 'B' days I used an old BBC monitor for my Amiga computer as I did not want to be a test case. I have had enough problems moving house, I had to change the licence address, and I thought I had done it, when I got threatening letters I phoned up to complain and found the records had not updated and the licence did not cover this house, it was still registered to last house, I did not even realise the address was so important, I thought if I got a knock on the door I could show licence and that would be that, seems I was wrong. It was then moved to new address.
If you have never had a licence then you could be OK, but in the house we moved from, but still owned by us, in spite of telling them there was no TV in the house, we started getting those threatening letters, as I say law has changed, but it use to say apparatus for receiving broadcast TV they did not have to catch you using it, having it on the premises was enough, as to if a satellite dish or TV aerial is considered as apparatus I don't know, but what I do know, I do not want to be a test case. Now son has moved in to house, so house has licence again.