Renderings of the “city within a city” concept outside central London. (Brent Cross Town) Related Companies made a big bet on the “city within a city” concept in New York with its Hudson Yards megaproject — and now it’s trying something even more ambitious in London. The firm has partnered with Argent, a developer in the U.K., to build a so-called “15-minute city,” according to the Wall Street Journal. The joint venture of Argent Related is calling the project Brent Cross Town. The 180-acre site — that’s more than six times the size of Hudson Yards — will have some 6,700 homes, along with 3 million square feet of office space, 50 acres of parkland and other amenities. The project, located about eight miles from central London, will also get a new train station in 2022 to ferry commuters into the city.