Following unprecedented competitor demand, the 2010 Porsche Carrera Cup GB is now full, with a 28-car entry confirmed five weeks ahead of the opening races of the season.Interest in Britain's fastest one-make racing category has run at record levels since the close of the 2009 season and the list of registered contenders has now hit the 28-car limit for the first time in the eight-year history of the championship.To ensure that all registered contenders can start all the races, the field has been capped at 28 cars. However, the championship organisers have now opened a reserve list in case any slots become available. It is also possible that spaces at specific race meetings may become open and these will be offered to any teams or drivers on the waiting list.In October 2009, the Carrera Cup GB set a new grid record at Brands Hatch when a 27-car field lined up for the deciding races of the season. That mark should be bettered when the 2010 season gets under way."This is an incredible situation for the Carrera Cup GB," said championship manager Marion Barnaby. "We have capped the entry at 28 for logistical reasons and the response has been amazing. The drivers and teams have worked very hard to get to this stage and now we are set for the best season ever for the Carrera Cup GB. I'm particularly pleased that the field is a great mix of established competitors and an influx of newcomers."The biggest squad on the grid will be the six-car team from Motorbase Performance and team boss David Bartrum says that the capacity grid is testimony to the commitment of Porsche Cars GB. "I said a year ago that the Carrera Cup was buzzing and it's now off the scale," said Bartrum. "It proves that the work of Marion Barnaby and the Carrera Cup team has really paid dividends. It's really good to see a sell-out grid in the current climate."The full Carrera Cup GB entry list will be unveiled at the championship's pre-season test and media day at Silverstone on Wednesday 17 March.