I am not a lawyer or know the law but I suspect there is a difference between streaming and downloading/selling and maybe the law has not caught up.
This is from
https://www.inbrief.co.uk/football-law/ ... es-online/ Will I be prosecuted for watching football matches online in this way?
It is unlikely that the football authorities would pursue cases against individuals who watch games in this manner, with the more desirable avenue to bring claims directly against the file sharing sites through the ISPs. Indeed, in 2014, the Court of Justice of the European Union ruled that internet users who watch copyrighted material online aren’t breaking the law by doing so. However, despite the fact that a claim may not be brought against you, participating in such a site leaves your computer open to viruses and may have adverse effects on the very sport which you wish to watch.
The 2 sites that I use have been going for years and used by thousands and as I have said previously use UK based advertising to fund themselves. This implies to me that they are not illegal but just supplying a legitimate need otherwise they would have been closed down years ago.
I have had a case where a family member was contacted by their ISP for an illegal download of a film and was warned off but I have never been contacted by my ISP for streaming. Not that I do a lot of streaming, maybe once a week.
Edited due to spelling mistake...apologies.