The agency has worked with the UK's fourth largest charity for the last three years. But on Wednesday it had to pitch against Mischief and Borkowski to hang on to the business.
'We were impressed with all three agencies but Frank really demonstrated how well they understand our goals and challenges and offered some fantastic ideas to promote next year's Race for Life campaign', said Cancer Research UK's brand and PR director Carolan Davidge.
Frank will continue to work alongside the ten-strong national in-house team.
