Tom Swarbrick has been announced as the new host of Drivetime on LBC effective from next month.
"From cub reporter to presenter of the flagship Drive show, I've been able to call LBC my home for the best part of a decade and I want to make the show an exciting, memorable programme that puts LBC's audience at its heart," Swarbrick said.
"To be asked to follow on from Eddie Mair, a titan of this industry, is a huge honour particularly at a time of such national and international turbulence."
LBC managing editor Tom Cheal added: "During his time at LBC, Tom has proven to be a formidable journalist and an outstanding broadcaster, who naturally connects with our listeners.
"His fresh approach and first-hand experience of Number 10 provides our audience with a unique insight into the workings of government.
"As we await a new Prime Minister, Tom is the perfect choice to host LBC's Drivetime programme, debating the big issues with our callers and listeners."
Mair's final show is expected to air later this month.