I wish Beatrix Potter were more recent - my love affair with the Peter Rabbit series was borderline obsessional as a child! Such magic... *wistful gazing into the distance*
BUT YES. Towers must absolutely hit upon a contemporary, mass appealing IP that has the potential to relate to almost every family in the UK. Quite what that is, I don't know! I'd be tempted to say there's not a single character, show or series that would be able to cover such a huge area (that hasn't already been nabbed elsewhere).
Something like Nickland at Blackpool &
Movie Park Germany would be ideal; an overall IP that covers an absolute multitude of programs, able to attract girls and boys of a wide age by using lots of different brands within the umbrella IP.