I was going to say what Kabaal said. If you look at the small print when you see ads for stuff like Amazon Prime and Netflix on tv it says "minimum 2mbps broadband connection required". The VM ad for 200mbits shows a cross section of a house with parents watching tv downstairs and then children upstairs playing games and doing whatever else. The reason why they market it like that is because when you are looking at these sorts of speeds you only make the most of them in a multi-user environment. You streaming on your laptop is going to use 20mbits/sec, who and what is going to use the other 180?
If all you are going to do is stream/watch tv then I would suggest going with an openreach provider such as Sky. VM aren't the best when it comes to streaming and congestion and without going into the details of network infrastructure you would be far better off taking a top tier Sky package of 76mbits for £34/month. Look at the last option bottom right
here (Sky Fibre Max).