Horton will be responsible for developing the business-to-business data specialist's analytical offering.
As principal consultant at LBM for nine years, Gareth was jointly responsible for setting up and growing the analytical capabilities within the company.
Ben Rawes was previously business development manager at LBM, and will be charged with developing existing client relationships and winning and maintaining large multi-year contracts.
Paul Spinks, managing director at Market Location, said: "Gareth and Ben's appointments serve to demonstrate Market Location's continued success and prime position in the market."