Misc: Who solves the crime in Death on the Nile?

Questions

Which comedian rowed for the defeated Cambridge crew in the 1980 university boat race?

Which London Underground station had its name changed to Barbican in 1968?

Otto Stich was president of which country in 1988 and 1994?

What is foil brand name Alcan an abbreviation of?

Which actor played seven different characters in the 1965 film The Family Jewels?