Ah sorry, I thought you were being pedantic. In my case it could have been someone who worked at Brighton and Hove Albion who nicked my money! (It was only a tenner and they probably needed to mend the West Stand roof....).
I want to the same game and lost my wallet outside the ground. Amazingly someone returned it to BHA who then sent it to me, credit and bank cards all still there*. Perhaps they're not so bad after all...
*They had nicked all the notes though!
They wouldn't let me in with my bag for the league game, turned away at turnstile. There is a bag drop off point in the car park, where you get given a cloakroom ticket. You then have to queue up to get your bag back after the game. Can take a while.