The pair revealed the possibility of a television comeback for the series in the "next couple of years" during a live audience Q&A during BBC Scotland's Commonwealth Quay, hosted by Kaye Adams.
Hemphill said: "We're talking to them at the moment about doing another series, but these wheels turn slowly.
"They seem very keen and are very supportive, and they're happy that we're doing the show down the road, having this reunion.
"Hopefully fully we'll be back on TV at some point in the next couple of years."
There have been no new episodes since the comedy duo and business partners split in 2007. They first shot to fame in sketch show, Chewin' the Fat.
It comes as the pair prepare to perform in front of 200,000 fans in a series of live shows at Glasgow's Hydro arena in September.