Former Infiniti factory team Support Our Paras Racing has revealed it will not take part in the 2016 BTCC season.
The team, founded by Derek Palmer Sr in 2015, was backed by Infiniti at the start of the campaign and fielded ex-F1 driver Martin Donnely in an Infiniti Q50 at Thruxton - but subsequently lost its factory support.
It continued to participate in the series with Derek Palmer Jr as its sole full-time driver, who ended up 31st in the standings with a best finish of 15th.
"Naturally it's a huge disappointment to the team, and the injured guys from the Parachute Regiment who prepared the race car," team boss Derek Palmer Sr said.
"We appreciate these are tough times financially for companies across the country, but that doesn't make our disappointment any less.
"Naturally I would like to thank our principal sponsor of last year, TENA Men, for all their support. We will now focus on returning to motorsport in a different series."
Support Our Paras was initially given a temporary TOCA BTCC License for entry for 2016, leased from the series organisers who will reclaim it with the team's exit.