William Green's premises were in Leicester Square between 1838 and 1855. No. 4 Leicester Square was a Gun Repository, and No. 6 (Savile House) was a Shooting Gallery 'brilliantly illuminated with gas', available also for fencing, archery, gymnastics and pool. Edward Oxford practiced there before his attempted assassination of Queen Victoria in 1840. A watercolour of the premises is reproduced in Howard L. Blackmore, A Dictionary of London Gunmakers 1350-1850, plate 54