This has exploded in my timelime (and Harry linked to it in the The Wheel thread), popular Youtube troupe/gaming team The Sidemen have frequently done one-off own brand versions of hit gameshows, this time they’re doing The Wheel on the proper set with the proper music and everything.
Of course Vikstar was a celebrity expert in the previous series (I suspect they’ve got KSI on this upcoming series, especially after his appearance on Celeb Bake Off) which might be some clever forward-thinking celebrity booking from Hungry Bear, and presumably letting them film an episode whilst the set’s still up works as a bit of quid pro quo that also opens the show up to new and different audiences. My gut says it was filmed as a tech rehearsal or after the series had filmed and the set was struck. Very interesting!