Is that not just a mirror site of the stake.com with all the same bets and events? In Belgium, I don't have access anymore to stake.com (when using wifi) so I need to use a mirror link but everything else is exactly the same (promotions, bets, events)...
No, it won't work as a mirror domain. Maybe they will provide same games in the UK version. Nothing is clear yet. Seems like, it will allow players from some restricted countries to make bet at Stake as legally. Read this article to get some information about it:
Aspire Global inks wide-ranging partnership with soon-to-launch Stake.co.uk<snip>
I think this bonus amount is based on user VIP rank only. There will be more bonus from Stake to celebrate the partnership with Watford FC. Use this link to claim the bonus:
https://stake.com/?bonus=WatfordStakePartnership