JPMorgan Is Planning to Build London’s Biggest Office Block

LONDON—Jamie Dimon, barely done with one mammoth building project on New York’s Park Avenue, is embarking on another this side of the pond.

The bank he leads, JPMorgan Chase, said Thursday it would construct London’s largest office block. The project in Canary Wharf, the dockland-turned-financial center on the eastern fringe of the U.K. capital, is due to finish in the 2030s.