After Lancaster was active between 1999 and 2006 in karting, he moved in 2006 into formula racing. He went in two Formula Ford races in the Star -of- Silverstone - series at the start and won a race. Lancaster Then moved to the winter series of the British Formula Renault. In the overall standings, the Briton finished in 16th place. Started in 2007 Lancaster for SG Formula in the Formula Renault 2.0 Eurocup and won the runner-up title behind Brendon Hartley. In addition, Lancaster started in the French Formula Renault, in which he finished sixth in the overall standings.
2008 Lancaster joined the Formula 3 Euro Series champion team ART Grand Prix for. In the first race at Hockenheim Lancaster had a serious accident. In position battle with Jean Karl Vernay touched Lancasters front of the rear wheel Vernays car. Then overturned the car of Lancaster and he was taken to the hospital investigations. The second race at Hockenheim, he had to cancel. In the rest of the season Lancaster won a race at the Nurburgring and was twelfth in the standings.
After Lancaster in 2009 had initially found no cockpit, he rose at Comtec Racing team for the fourth race weekend of the 2009 season in the Formula Renault 3.5 series. With a win, he finished the season 13th overall. 2010 Lancaster played his second season in the Formula Renault 3.5 for Fortec Motorsport, where he was team-mate Sten Pentus. At his home race at Silverstone Lancaster took care of unwanted headlines. Starting from the pole position he lost when starting the control of his vehicle and cleared the starting behind him, Daniel Ricciardo of the track. While his teammate, was fourth, he finished with a third place as best result 13th overall.
In 2011, Lancaster, first part in a race weekend of the FIA Formula 2 Championship. Then in 2011 he rose to the third race weekend of the season in the Auto GP and went to Supernova. In his third Auto GP race at Donington he was best with the rainy conditions to right and scored his first victory. Because of an ankle injury he had sustained while training for a triathlon, he had to prematurely end the season after the third race weekend. At the end of the season he was on the eleventh place overall.
2012 moved to Lancaster Ocean Racing Technology in the GP2 Series. For the second race weekend he was shortly replaced by Brendon Hartley, as there were budget problems. He then came no longer used. 2013 Lancaster returned for the third race weekend in the GP2 series back. He solved Pål Varhaug from at Hilmer Motorsport. Already at the first race in Barcelona Lancaster scored a podium placement with a third place. The sprint race at Silverstone and the Nürburgring he chose for himself. It was his first GP2 victory. After five events for Hilmer Motorsport Lancaster lost his cockpit for a weekend at Robin Frijns, who had previously been his teammate in four race weekends. Lancaster then returned to the cockpit. With a total of three podium finishes he finished the season on top of the eleventh. In addition, Lancaster approached for Greaves Motorsport to a race of the FIA World Endurance Championship ( WEC) in 2013 and was doing fifth. 2014 Lancaster begins the GP2 season for MP Motorsport. After the first race weekend, he finished 18th overall.
- 2008: Formula 3 Euro Series (No. 12)
- 2009: Formula Renault 3.5 ( 13th)
- 2010: Formula Renault 3.5 ( 13th)
- 2011: Formula 2 ( 17th)
- 2011: Auto GP (11th )
- 2012: GP2 Series ( No. 34 )
- 2013: GP2 Series (No. 11)
- 2013: WEC LMP ( place 23 )
- 2014: GP2 Series