A Webley Revolver was a type of pistol.
Torchwood Three had at least one Webley which belonged to Jack Harkness. Jack drew his old Webley when facing Weevils. (PROSE: Slow Decay) He also used it to shoot a Nostrovite at Gwen Cooper's wedding (TV: Something Borrowed) and to shoot Suzie Costello. (TV: They Keep Killing Suzie)