 The force's strength was 354 by the end of the year, and its headquarters were at Wakefield.In 1974 the force was split, under the Local Government Act 1972.The bulk of the force went to form the new West Yorkshire Police (with Bradford and Leeds) and South Yorkshire Police (with Sheffield and Rotherham Constabulary the former Barnsley and Doncaster County Borough forces and the interlinked county areas), with other parts coming under the North Yorkshire Police, Cumbria Constabulary, Humberside Police, and Lancashire Police forces.