It's always best to geoblock all UK users from the start. We ban them from our servers, geoblock the web page, and plan to geoblock our apps for connections within or to the UK. However, it's technically not easy and in our opinion it is also the UK/Ofcom's responsibility to block Internet services not compatible with their laws.

On a side note, if all countries acted like the UK, the Internet would be gone very soon.