Leon has doubled its presence in King’s Cross, with the an opening in Pancras Square.
The 54-cover site is the brand’s 10th new opening since January and 32nd in total.
It is understood to be in talks on a further site near Fenchurch Street.
Marketing manager Rachael Gough said: “This is a big one for us – we can’t wait to serve fresh food in thirty seconds from our thirty-second site.”