By-election archive: Orpington to Hamilton, Crosby, and Eastleigh

By-elections sometimes lead to surprise results that go down in history, while others are forgotten within days.

In a This Week film, Giles Dilnot looks through the archives at the nights which put Orpington, Hamilton, Crosby, Bermondsey, Crewe and Nantwich, Bradford and Eastleigh on the political map,