Most of you have mentioned all the usual suspects, but I will probably include them in my exhaustive list.
Simon Cowell
James Corden
Oprah Winfrey
The Markle woman
Amanda Holden
George Clooney and his wife
Michael Buble
Joe Swash
Philip Schofield
Ant and Dec
Tom Daly, I think the fame has gone to his head
Hannah Moore (Captain Sir Tom's daughter)
I'm sure I will think of some more to add!
I've just realised that the title of this thread, uses the word celebrities, so I should probably omit Hannah Moore. Or maybe not, she thinks shes a flippin' celebrity!