One photograph of the Mayers and Harrison Ltd instrument workshop titled 'Back street musical instrument makers'. Three workers have a lunchtime music session featuring a (left to right) trumpet, trombone, and clarinet. The valveless silver trumpets they are working on stand in a row in the background. Caption on back reads: 'The back street workshop of Mayers and Harrison Ltd., who have the important task of making for Her Majesty's Government silver State Trumpets to be used by the Household Cavalry. Story A. Palmer'.