This is the latest in a number of senior appointments at Chemistry including former CTO of Hootsuite, Ajai Sehgal, joining as chief technology and information officer.

During his time at Interbrand, Hales (pictured) was CEO of Interbrand London between 2007 and 2013, before becoming the global CMO of Interbrand Group from 2013 to 2015, where he was responsible for the worldwide marketing function across the network’s 34 offices.

As chief marketing officer Hales will be based in London. He said: “There were many things that impressed me about Chemistry – from a team made up of incredibly smart people to having its very own innovation lab – and it’s truly a hidden gem in this space.”

Roger Philby, CEO of The Chemistry Group said: “Last year was an exciting year for us, from launching our own innovation lab to rolling out ground-breaking new tools to help our clients to recruit the best employees for them, including a game and a Facebook application. This year is going to be even bigger and better and having a stellar line-up is vital to growing in the right way.”