This has just been announced on social media 

Bonus Arena, Hull

We regret to announce the UK Seniors tournament has been postponed until January.

Due to the continuing challenges and restrictions for overseas travel, a decision has been made to delay the competition. The event would have been the first to take place at the Bonus Arena, Hull since March 2020.

However, a decision has been taken to delay the tournament – set to feature Jimmy White, Joe Johnson and Ken Doherty – from 12-15 August to 4-7 January 2022.
It is hoped the international snooker legends based overseas will be able to take part by moving the event to next year.

Tickets already purchased for the event remain valid for the equivalent new dates in January. The full draw for the event will take place next month.
To book tickets for the 2022 event visit –> Bonus Arena Hull Website

It’s unfortunate of course but probably the best decision given the circumstances