Police discovered a cannabis factory when they swooped on a disused pub - on the same road as the force's headquarters.

Officers raided the Crown and Horseshoes pub in Langley yesterday following reports of suspicious behaviour.

They returned to the site on the corner of Sutton Road and Horseshoes Lane today to remove plants and equipment from the building.

Four men have been arrested on suspicion of cultivating cannabis. The men, aged 38, 44, 21 and 59 have been bailed until July 8, pending further investigations.

Neighbours reporting seeing bright lights through the windows after the police raid and a strong smell of the drug emanating from the open windows.

The pub closed down about four months ago and the building is currently for sale.