A Labour prime minister in this period promised that re-organisation would introduce "a grammar school education for all". Who was this?

In 1951 the provisions of the 1944 Education Act were still being implemented. The new Tory government faced the reality of comprehensive schools in most parts of the country, and a greatly expanded university sector. More changes over the 50s, 60s and 70s meant that, by the time of the Conservative government in 1979, much had changed.