25 years ago: A teachers’ union named 21 schools in the Bradford district which were to be hit by “guerrilla strikes” as part of an ongoing row over wages.

50 years ago: Bradford’s transport committee authorised immediate cuts to the city's transport services due to staff shortages.

Also in the news...

1966: Chancellor of the Exchequer James Callaghan said Britain would switch to decimal currency from 1971.

1978: Charlie Chaplin’s coffin was stolen from a Swiss cemetery three months after burial. It was found ten miles away on May 17.