Slaughter and May has banned work-subsidized ski trips, following an incident that saw a  lawyer leaving the firm on the back of sexual harassment allegations, a person close to the situation said. 

The ban follows a "wider risk review" by the firm that sought to address behavior at social events.

The decision, first reported by The Telegraph and corroborated by the person, took place last summer. The Telegraph reported that a female colleague complained that she had received messages "of a sexual nature", and had refused to share a hotel room with the lawyer in question after a night of drinking on the ski trip.

The male lawyer at the heart of the allegations has since left the firm, the person close to the firm said. 

Slaughters is the latest Magic Circle firm seeking to curb bad behavior at boozy events. This week Linklaters launched a 'sober superviser scheme' that will see a designated person remain sober and oversee work gatherings. 

And late last year, Freshfields' partnership voted in new measures whereby badly behaved partners could be fined up to 20% of their profit share for 12 months.