Come in for a night duty (7.45 pm start) at the old LATCC (where Compass Centre now stands) and the lady in the canteen would be busy clearing up, so she usually told us to serve ourselves!
I was there on an afternoon duty one day and asked for steak and chips; she gave me 2 pieces of steak on a whole mountain of chips, charged me 5 bob.*
This was nothing compared to Gypsy Rose who used to do the graveyard shift at West Drayton; Len Vass told me he went down about 2 am and asked for egg and chips; she gave him 3 eggs on a big pile of chips. 'Not much there, that'll be one and six*' she said!
*If you youngsters don't understand pre-decimal money, tough!