But bingo, as I say, isn't what it used to be. It's no longer about old women with stockings hanging round their ankles, and these days they don't use ping-pong balls. You buy a book of tickets at the beginning of the session. Several games are played from each book, and you've three chances of winning: if you have all the numbers across one line, if you've any two lines complete on a single ticket, or - a full house - if you've all 15 numbers on the ticket. And prizes can be impressive - we saw one man pocket £800. You can also join a separate national game played simultaneously in bingo halls across the country, where the winnings often run into thousands.