The London Borough of Tower Hamlets was formed on 1 April 1965 under the London Government Act 1963, merging three former Metropolitan Boroughs:
The Act created 32 London boroughs from 86 former authorities. Tower Hamlets grouped the historic East End riverside communities—docklands, markets, immigrant quarters—into one administrative unit.
From the Tower of London (western boundary) + hamlets (historic villages: Mile End, Bow, Bromley, Poplar, Ratcliff, Shadwell, Stepney, Wapping, Whitechapel). The name predates the borough (used 16th c. for the Tower's liberty).
Tower Hamlets: where the City's money meets the East End's soul—now a global finance (Canary Wharf) and culture engine.