Sorry, I forgot to leave feedback yesterday. So, better later than never
You have probably all UK channels for everyone's taste, but there is some Spanish, Italian and other channels as well. Most of channels works well. But some sports channels doesn't work well during live events. I tried to watch Chelsea - Leicester match yesterday on channels like Sky Sports Main Event, but it was almost impossible to watch it due to lag - it was like slideshow.
Also, some of your HD channels probably are streamed in compressed bitrate, because it looked like SD channel.