Other lives: Teacher of English as a foreign language whose 40-year career took him to schools, universities and ministries of education in 16 countries

Other lives: Teacher in Guyana and south London determined to raise achievement and foster leadership in young people

Historian of imperial Spain known for his vivid biography of a 17th-century statesman, the count-duke of Olivares

Diplomat and scholar of international relations who served as the first female US secretary of state

Other lives: Holocaust refugee who settled in London and trained as an economist

Other lives: Open University student in the 1970s who went on to become permanent secretary of the OU student association