His new role at Dearman is international head of corporate comms. It is understood that McLaren Group is in the process of recruiting Heatley’s successor.
Heatley joined McLaren in August 2012 after two years as senior comms business partner at Rolls-Royce.
Toby Peters, founder and senior group MD at Dearman, said: "Ben has extensive communications experience, gained in senior positions with blue-chip technology companies, and his role is now to tell the Dearman story to the world.
"Ben will significantly add to the capability of our communications team and now is exactly the right time to make such a senior hire, because the company is making rapid progress on the development of our technology and its widespread industrial application. The fact that Ben chose to leave such an established and inspiring company to join Dearman also speaks volumes about the progress we have made and the potential of the company to make a difference."
Heatley said: "I am very proud to have joined Dearman. It’s already a special company, which has developed extremely exciting technology, but its potential is what inspires me. Dearman has an opportunity to become a very significant and sizable company, but moreover it has the potential to make a real difference to people around the world. I am excited about the challenges ahead and look forward to making a worthwhile contribution."
The announcement follows Dearman’s recent appointment of Laura Gilmore, previously head of the Liberal Democrat Whips’ Office in the House of Lords, as head of public affairs and campaigns. She also held senior roles within the London Assembly and Liverpool City Council.