Licensees have been warned not to allow commercial gambling on their premises after a customer was cautioned following an investigation in Chester.
The 46-year-old received the caution after police, Chester City Council and the Gambling Commission targeted illegal betting in pubs and clubs.
In March, regulatory-body the Gambling Commission warned bookmakers, publicans and club officials that it is illegal for bookmakers or their agents to sit in a pub taking bets.
In the following case the Commission found evidence that facilities for betting were being provided in such premises.
The Gambling Commission's director of regulation, Nick Tofiluk said: "Anyone providing facilities for commercial gambling in pubs and clubs is breaking the law.
"This joint operation demonstrates the effectiveness of our developing relationships with law enforcement, local authorities and other agencies and we are grateful for the support of Cheshire Police and Chester City Council."
Those who help facilitate illegal betting can be jailed for up to 51 weeks or fined £5,000.
For more information about gambling in pubs and the law visit www.gamblingcommission.gov.uk