Ambush in Leopard Street is a low budget 1962 British 'B'[1] black and white crime film directed by J. Henry Piperno and starring James Kenney, Michael Brennan and Bruce Seton.
With his sidekick Nimmo, the plan is to ambush a truck containing £500,000 of diamonds in Leopard Street, but heavy security means recruiting a larger criminal gang than usual, and the inexperienced newcomers may derail Harry's scheme.
The Monthly Film Bulletin wrote: "Even the climax, the actual ambush, lacks punch in this routine and unconvincing crime thriller.
The acting is adequate, but suffers from confined production and a more than usually weak story.
"[1] In Forgotten British Film: Value and the Ephemeral in Postwar Cinema Philip Gillet wrote: "[J. Henry Piperno's] direction can be pedestrian, the fight between the two gangs being cursory and clumsy, though constraints on time and budget doubtless contributed to this.