The bespoke 12-week campaign, featuring endurance swimmer Lewis Gordon Pugh, will run across London and the South East before some of the season's major releases, such as Atonement, The Kingdom and Stardust. It will feature an extended version of the company's 30-second TV advertising creative, with the message: "Ordinary won't change the world".
Raymond van Niekerk, head of marketing at Investec, said the creative would "make a big impact on the big screen".
Anne Westwood, account director at The Gate Worldwide, the agency behind the campaign, said: "Pearl & Dean delivers a niche audience for Investec by allowing us to select screens in affluent areas and to follow appropriate films."