This has been posted on here before.
The list below gives the amount of times each club has played in front of a crowd of 100,000 or more in the UK.
41 - Rangers
26 - Celtic
12 - Man United
10 - Liverpool
9 - Aberdeen, Spurs
7 - Arsenal,Newcastle
6 - Aston Villa, West Ham, Man City, Everton, Hibernian,
4 - Notts Forest, Leeds, Kilmarnock, Motherwell, Morton,
3 - Sunderland, Bolton, Wolverhampton, Leicester, Chelsea, Norwich, St Mirren,Hearts,
2 - Blackpool, West Brom, Preston, Southampton, Brighton, Clyde, East Fife,
Dundee, Dunfermline, Eintract Frankfurt,
1 - Sheffield United, Birmingham, Luton, Blackburn, Burnley, Sheffield Wed, Fulham, Ipswich, QPR, Watford, Stoke, Benfica, Munich 1860, Real Madrid
“Huge followings” in Asia don’t really count much in my eyes. They might help generate publicity and revenue, but they aren’t really supporters. Leicester went from being a bit of a non entity in Asia to having a big Asian fan base as soon as they won the league. These folk aren’t real supporters.
It wasn’t so long ago the filth had on their wiki page that they had 9 million fans worldwide, 7 million of which were in Japan due to Nakamura. Delusional to say the least.
In terms of boots on the ground supporters in the UK, Man Utd and Liverpool are the only clubs I’d say for definite that would be bigger than us.