Inside a Wealthy Tech Bro’s Bruce Wayne-Style £30M Super-Home
22nd May 2026
ergey Frolovichev, 46, is describing his “bat cave”. It is beneath the garden of his mansion in Hampstead, north London, which he has just spent £15 million — and more than five years — dismantling and rebuilding.
The room, the Anglo-Russian software supremo explains, can be accessed via a staircase from a corner of the living room, concealed by retracting floorboards — with the design inspired by his favourite film, The Dark Knight.
“It [the 2008 Batman film] was amazing, amazing special effects, everything,” says Frolovichev, who made a windfall by developing dating apps with his billionaire business associate, Andrey Andreev.