Mr. Holland (Alec Guinness) has supervised the bank's bullion run for years. He is fussy and unnecessarily overprotective, but everyone knows he is absolutely trustworthy. And so, on the day the bullion truck is robbed, he is the last person to be suspected. But there is another side to Mr. Holland; he is also Dutch, the leader of the Lavender Hill Mob.

Prolific Ealing writer T.E.B. Clarke won an Oscar for his deft script but he was helped greatly by the precise direction and impeccable timing of director Charles Crichton, and by the brilliance of Alec Guinness's performance. When he tries to recruit Mr. Pendlebury (Stanley Holloway) as Pendlebury chips away at one of his sculptures, Guinness circles Holloway, playfully seducing him into the idea of robbery and, as Holloway finally understands the proposition, Guinness looks back over his shoulder like some elfin Lucifer. When the mob goes over its robbery plans, Guinness insists on a detail and Shorty (Alfie Bass) acknowledges that Guinness is the boss. Guinness, concentrating, agrees. Then, as he relaxes and eases back in his chair, Guinness sheds his years of servitude to the bank - Dutch Holland is indeed the boss...