As previously reported by Restaurant, Junk Group is bringing both brands to the West End neighbourhood as part of its wider London rollout.
Puffy will open on 17 November, followed by Junk in the first week of December.
The openings will give each brand four London locations.
Founded by Majed Mansour and Wissem Ben Ammar, the group made its UK debut with Junk in Soho in 2024, adding a Marylebone restaurant the following year.
Puffy opened its first permanent London shop on Old Compton Street in 2025, close to its sister brand’s debut restaurant.
The group has since added Puffy Mayfair on South Molton Street and a Spitalfields location that brings both concepts together under one roof.
The Covent Garden Junk (pictured above) will serve the brand’s concise smash burger menu, including its classic cheeseburger and truffle double cheeseburger, while Puffy will offer its signature freshly baked cookies.