You were fine when the light was green, but if it turned red, the power on the stage would go off after 30 seconds. You either turned down or got turned off. Of course every band member with knowledge of electronics would set his mind to "beating the meter", often with hilarious results involving electric shocks or club blackouts. They didn't last too long.
The Waggon & Horses and the Blythe Spirit were both gigs where you took your life in your hands before entering. If they didn't like you, you were doomed, and you'd never get booked back. These were rough areas, make no mistake. Meir and Weston Coyney were notorious for fights, and as I've said, you wouldn't get police to come out to these venues, it was simply too dangerous.
To sum up though, even though the clubs were a nightmare, if you had three gigs a week you could survive. I can't remember what they paid, but it was enough to get you by. Most of the clubs are gone, victims of the closure of the mines and the pot banks under Thatcher of course. As I've said, they were the lifeblood of the communities they served. Even though they were dominated by self-serving men on committees, they had the well-being of the community at heart, and if a member was injured at work, the club members would rally round to help. The bingo was fine too, there was nothing wrong with it really, it provided great entertainment to many people for many years.