Council builders working at Bradford’s City Hall have unearthed a World War II sign directing people to the location of an air raid shelter in the basement.

It was discovered when a worker removed a built-in cupboard as part of work to convert the former police rooms into a registrar’s office and wedding venue.

It is believed the sign was covered up sometime during the 1950s when the rooms were used by the city’s police force.

It is one of a number of signs that would have directed workers and members of the public to the shelter during wartime air raids.

The work at City Hall will see the creation of a new Bradford Registrars Service. There will also be a police museum with tours into the cells.

Steph Moore, estate manager, said: "It was amazing to see this sign which has remained hidden all this time.”

If you know anything about the background for the sign, email