He has been appointed as marketing manager.
At Experian, Blackmore was responsible for the AA Car Data Check.
He launched the AutoCheck consumer product, as well as AA’s Vehicle Inspection product with Car Checkers.
Prior to that, he was marketing consultant with Provident Insurance, launching its motor insurance brand Yes Insurance.
Daniel Burgess, director of HPI said: "Jonathan’s marketing expertise, combined with his vision and understanding of the HPI brand, makes him the ideal person to build on our strong market position.
"This appointment is part of HPI’s ongoing development strategy, as we celebrate 70 years of success and look to future growth and expansion."