On 4 April 1921 Middlesbrough Corporation Tramways took over operation of the
Middlesbrough, Stockton and Thornaby Electric Tramways Company services provided by the
Imperial Tramways Company. The fleet comprised 31 tramcars operated jointly with Stockton and Thornaby Corporations between
North Ormesby and
Norton Green, and between the
Middlesbrough Transporter Bridge and
Linthorpe. In the first two years of operation, 9 new double-deck tramcars were purchased, the single deck trams were re-equipped, and there was a programme of track doubling and renewals. A depot of 14,250 sq yds was built in Parliament Road, and formally opened on 19 July 1921 by the chairman of the council Tramways Committee, Councillor Edwin Turner. ==Closure==