The indie brand has also refreshed its Mayfair store and will launch at Saks Fifth Avenue in May.
London’s New Bond Street has risen to become the third most expensive street in the world.
The new store is expected to attract a more international clientele than the Sloane Street unit.
Plein opened the brand’s first London store on New Bond St. and the first-ever point of sale for Plein Sport on Paris’ Rue de Rivoli.
Chief executive officer Jace Tyrrell announced the group’s rollout plans for 2020.
At the end of last year, London Luxury Quarter businesses generated a total of 4.9 billion pounds, or $7 billion, annually.
The report created in in association with Savills, a real estate provider, surveyed shopping destinations around the globe rating it from a visitor and retailer angle.