Complex sentence: In 1965 the urban district was abolished by the London Government Act 1963 and its former area was transferred to Greater London from Kent, to be was combined with that of other districts to form the present-day London Borough of Bromley.
Split into simpler sentences: In 1965 the urban district was abolished by the London Government Act 1963 and its former area was transferred to Greater London from Kent. Its former area was combined with that of other districts to form the present-day London Borough of Bromley.