A spokesman for Nottinghamshire police said: "Nottinghamshire Police, in common with other forces, has been urged by the Home Office and senior officers within the force to use powers granted under section 19 of the Criminal Justice and Police Act 2001.
"Under section 19, a closure notice can be served within 24 hours of finding a breach of a premises licence, with the effect that between seven days and six months of service of the notice, police can apply to local magistrates to close the premises if the breaches have not been rectified.
"If premises stay open whilst breaching their licence conditions they are advised that they are acting otherwise than in accordance with their licence and are committing a criminal offence under section 136 of the Licencing Act 2003 unless they cease licenceable activities immediately. In practice, the premises may shut to avoid criminal prosecution. It was on advice from the police that the two premises named chose voluntarily to close and address their licensing issues."