I have been a member of Twickenham & District MRC for 50 years - although nowadays I take the '& District' bit quite literally as I now live in Watford.
I have modelled OO, American HO, American O, British O, European G, American HOn3, American ON30, American ON3, OO9 and dabbled in P4.
My current project is Chinese HO. I think I have the best large Chinese HO layout in the country - but equally I have the worst large Chinese HO layout in the country as I think I have the only large Chinese HO layout in the country.
As you might guess, doing something 'different' has always been my goal. Someday soon the exhibition circuit will be awash with large Chinese HO layouts and so I'll need to model something else.