The site covers an area of approximately 1,500 square feet with a 1:00 am license and is expected to be open before the end of the calendar year with an unrestricted capacity of 150.
The group said it currently has a further five sites in “legal negotiations” across several of its brands which are also set to open.
Since the relaxation of the Covid restrictions, the group claimed its bars have continued to “trade well” with it being “particularly pleased” with the performance of its Luna Springs bar in Birmingham where unrestricted capacity has more than doubled to over 1,000.
Sarah Willingham, CEO of Nightcap, said: “Since the lifting of the Covid restrictions we have been impressed with the strong trading at all of our City sites in London.
“I am therefore delighted to announce the signing of this new bar by Mansion House tube station as the next in a string of new sites being finalised for The London Cocktail Club. We are delighted to see that the hard work invested across the group, in securing the best possible sites across the country, is starting to pay off.”