An impressive thread. It's an interesting read.
My list starts when I was young my parents took me to a lot of seaside towns and we'd visit the shows. Back when I was young I was very ill, so got to talk to the performers back stage. So I met; Cannon and Ball (though I knew Bobby Ball through family), Joe Longthorne, Shirley Bassey, Jimmy Tarbuck, and The Grumbleweeds.
I went to a special school so they always had famous sports people either coming to visit, or we'd go on trips out. The footballers in the list visited the school, while the snooker players we saw and chatted to them at the guild hall in Preston; Peter Shilton, Ryan Giggs, Nicky Butt, Paul Scholes, Gary Neville, Stephen Hendry, Steve Davies, Jimmy White.
I met the original girl who played teenage Tracy in Coronation Street, Dawn Acton. That was at some charity. I was young so all I remember doing was leap frogging people to raise money.
I also met Princess Diana and Richard Madeley at a tree planting ceremony for the ground work trust.
Probably the most infamous person I've met was Tony Blair before Labour won the 1997 election.