Linfoot will be team-mate to Peter Hickman following a stint in the World Supersport Championship during the second half of last season.
"I'm over the moon to reach this agreement with GBmoto and to be back competing in BSB," Linfoot said.
"I've had a very scattered past few seasons and feel I can make a 'home' with this team.
"BSB is an ultra competitive series, which is continually being proven as the place to be, so I'm very pleased to be onboard with GBmoto. It is great to be riding alongside Peter (Hickman) and working with Matt Llewellyn as my crew chief."
Linfoot took a WSS podium finish at the final round of the season at Magny Cours.
Team manager Terry Liquorish said: "I am delighted to welcome Dan to the team. Dan is one of the best riders in the UK and, despite his relatively young age, he has a wealth of experience that's been gained at the highest levels of motorcycle racing.
"There is no doubt that he is capable of challenging for top honours in the MCE British Superbike championship. The addition of Matt Llewellyn as crew chief for Dan is also another indication of our commitment to build the team's strength and capabilities, right across the board, and offer a solid return for our sponsors and other partners.
"I can already feel the 'buzz' within the team as we head towards the new season."