Mark Anthony Reynolds, who has forbidden bad language in his bar for two years, said national chain JD Wetherspoon's plan to enforce the rule was sensible.

"If someone is causing trouble it is there as a backup for you," he said.

"It is not necessarily aimed at people who let a bad word slip.

"But if there is a group that are causing trouble you can just tell them there's a no swearing policy."

JD Wetherspoon, which has 650 pubs in the UK, is trying to tackle abusive language after customers wrote letters of complaint to the company's in-house magazine.

The firm is considering putting messages on menus that would ask customers to refrain from using bad language.

They are also hoping to encourage people to avoid using mobile phones.

The Room - formerly the K Bar - in Princess Street, Knutsford, has signs that ask customers not to swear.

"In Wetherspoons it would help because they don't have any music on and you can hear it," said Mr Reynolds.

"But I can't see the mobile phone ban working because nearly everyone has them. It would be different in a restaurant section."

The Room also bans customers from wearing baseball caps, football strips and some sportswear.

Mr Reynolds said their policies on swearing and dress made it easier to retain certain clientele and to keep others out.

"At the end of the day it's all about creating a nice environment," said Mr Reynolds.

"If you set your stall out it helps to keep that up."