It was explained earlier by the OP that the 7 way board pictured also had a shower and immersion boards that would be incorporated into the new board... so that's 9... Add futureproofing to another couple spare ways... that's 11... And now it depends on what size the manufacturer produces.
Hager does a 14 way, maybe a 12?? So a 13 way MK may have been a realistic suggestion.
Coincidently, I swapped an MK board last week to a 14 way Hager, full RCBO, with 2 spare ways.
Not cheap. But then, my customer's budget wasn't too limited!