The artisan coffee chain was launched in 2012 by Australian siblings Nick, Laura and Andrew Tolley, who also developed Taylor Street Baristas. The Tolley siblings were previously represented by Bell Pottinger, but following a pitch, Brands2Life is now the brand's consumer, social media and digital agency.
H+H is about to open its 46th store in Stansted Airport in March.
Nick Tolley, CEO Harris+Hoole, said: "2015 is a pivotal year for Harris+Hoole, and Brands2Life’s belief in our business shone through, as did its clear strategy to use engaging, integrated ideas with impact that will help us meet our business objectives. The team’s track record with John Lewis, Ascot Racecourse and Pinterest showcased real creativity and tangible business benefits for online, lifestyle and destination brands."
A number of H+H outlets currently operate within Tesco stores. The supermarket group, which owns a significant stake in the coffee chain, has not revealed how many H+Hs it plans to open in its units.
However, under new CEO Dave Lewis, Tesco has decided to close many of its large out-of-town stores and focus on more profitable smaller outlets.
Last month, Tesco hired Blue Rubicon to advise on achieving a "reputation turnaround". Lewis is understood to be reviewing all of the company's consultancy relationships as part of his "turnaround" plan.