Maison Estelle has been allowed to reopen under stricter licensing conditions for 12 months after police concerns over a serious public safety incident prompted the Mayfair private members’ club’s temporary closure.

Westminster City Council decided against revoking its premises licence following a full review hearing in October. The authority confirmed that the Grafton Street venue could resume trading from Wednesday 4 November, with earlier closing times and changes to its conduct and procedures.

The Metropolitan Police had requested an urgent review, leading to the suspension of the club’s alcohol licence at an interim hearing in September. Officers raised concerns that the venue was “associated with serious crime, or serious disorder, or both”.

The precise nature of the incident has not been disclosed. Police were reportedly investigating a claim involving a weapon; that detail has not been established as fact.

For the first week after reopening, the club must close by 11.30pm from Monday to Thursday, midnight on Fridays and Saturdays, and 10.30pm on Sundays. Under the 12-month controls, licensable activities must end by 1am from Monday to Saturday, with the premises closing by 1.30am.

The council said its licensing sub-committee had imposed additional conditions “to ensure that the necessary changes in conduct and practice are put in place so that the venue remains safe”. It said decisions reflected the evidence presented and what was necessary to uphold licensing objectives.

Maison Estelle, which occupies a Grade I-listed Georgian townhouse and attracts celebrities, business figures and other high-profile members, gave a different emphasis when the suspension was imposed. It said it had decided to close after receiving police information about a serious incident outside the premises.

“The safety of our staff, our members and their guests will always come first,” a club spokesperson said at the time, adding that it was working closely with the council and police on licence conditions and procedures.

The review hearing is understood to have been held in private because parts of the discussion may relate to the continuing police investigation. The committee’s full reasoning has not yet been published. Its decision permits trading under tighter controls; it does not resolve the circumstances of the incident.