 During his period a new and separate science block was built a short walk away from the school's main site.Roy Mansell led the science team and was for a short period the last headmaster after Patrick Hutton.Soon after headmaster Patrick Hutton (formerly head of English at St Paul's School) arrived in 1970, the Inner London Education Authority (ILEA) proposed to merge SMGS with the local secondary modern school, Rutherford School, later part of North Westminster School.