Chris Stockton returns to the BTCC for final two rounds of 2012

Stockton, who has raced GTs since he last appeared in the BTCC in 2008, will race Thorney Motorsport's NGTC Vauxhall Insignia at Silverstone and the Brands Hatch finale later this month.

"I have always loved the BTCC and racing the Insignia this weekend represents a chance for me to get a good idea about exactly what the New Generation Touring Cars are all about," said the 43-year-old, who raced in the series between 2006 and 2008.

"It looks like an exciting time to join with the new regulations."

Stockton could join a team for 2013 or run his own car.

"I am open minded about which way to go with my plans to race in the category full time next year," added Stockton, who is testing the Insignia at Pembrey this week.

"I am open to discussion with teams for 2013, or we can run a car under the BTC Racing banner."

Team boss John Thorne hopes Stockton will be one of several drivers to race Thorney-built Insignias in the BTCC next year.

"It was always our intention to build and supply cars for next year," he said.

"We're delighted someone with Chris's experience has decided to go with the Insignia and can see its potential.

"We'd like to see four Insignias in the BTCC next year - two run by us and we're talking to three other teams."