For now here is an archived version of the Generation Identity homepage
And here is an archived version of the Identity Evropa homepage
If you would like to get to these sites around the UK 18+ barrier, you can use a proxy plug-in for your browser (free but don't write personal information while using one of these though) to visit the sites proxies through another country, or you can use the TOR browser (safe and free) or you can use a VPN service like Virtual Shield or NordVPN (safe and cheap). Or you can put in your personal information the UK ISPs require to let you see the page normally, as instructed in that screenshot.
Most will tell you to pirate.
I will tell you that you can try other streaming services(not free), such as Amazon Prime Video that offers Channels. Or just HBO's streaming serivce.
If those services are not available in your country, I suggest using a VPN and changing your 'location' so you appear to be in a different location.
I hear Virtual Shield for it.
Bare in mind, the VPN method only works if you use another legit streaming site such as HBO/Hulu/Amazon Prime/Netflix, etc. I recommend it for the best quality.