He helped found and served as a board member of Apple Corps and assumed Epstein's duties after the manager's death.

He completed his national service in the RAF before starting work for the Lewis's department store in his early twenties.

[3] After the takeover of Apple Corps by Allan Klein, Brown handed in his resignation New Year's Eve 1969, after being asked to fire several close friends.

BLJ Worldwide has been implicated in a number of controversies since its inception – particularly due to the companies' alleged anti western stance and involvement in Middle Eastern politics – first revealed to the wider public eye after Brown chose to defend his work for the family of Colonel Gadhafi in a 2011 Financial Times article.

[6][7][8] Other instances of alleged misconduct on behalf of BLJ include the firm's involvement in the controversial Vogue cover shoot featuring then Syrian First Lady Asma Al-Assad[9] and allegations of sabotage during the selection process for the 2022 FIFA World Cup on behalf of the Qatari government.