Re: 4K Tv
4K programmes and films are available, but I think we are at a bit of a 'tipping-point' in new viewing technology - and it hasn't yet established itself.
In the UK, Sky are doing their best to establish it as the new platform with their 'Q' box and of course both BT & Sky are showing most of their football with this as an option (no increase in costs if you have the Q box).
Amazon have established 4K as their standard platform - but the content & catalogue of what they have is a bit limited as yet - but it's the best way to watch the GT.
Not sure of what is available in Spain (or what you might want to watch), so have assumed that you will be watching UK based TV via a VPN.
Hope this helps