Racing career
- 2011
- Superleague Formula – Japan car – race-winner in Assen
- 2010
- Superleague Formula – Flamengo car – four podiums, one superfinal appearance
- Auto GP – DAMS – third in driver championship, winner of team championship
- 2009
- Firestone Indy Lights – St Petersburg, USA
- Superleague Formula – Galatasaray car – 4 races – best position fifth
- Formula Master – 2 races Pau
- 2008
- Superleague Formula – Tottenham Hotspur Car – 10 races – 3 podiums
- World Series by Renault – 4 races with RC Motorsport – Silverstone, Hungary, Estoril and Barcelona
- Porsche Carrera Cup – 1 race Thruxton
- Le Mans Series – 1 race Monza LMP1
- A1GP GBR – Rookie Sessions Mexico and Shanghai
- Awarded BRDC Superstars Status
- 2007
- Formula Renault UK Champion – 10 wins
- McLaren Autosport BRDC Award Finalist
- Autosport British Club Driver of the Year
- 2006
- Formula Renault UK debut season
- British Racing Drivers Club ‘Rising Star’ award
- 2005
- Nine consecutive wins and second in the UK Formula Ford Championship.
- Winner Formula Ford Festival
- McLaren Autosport BRDC Award finalist
- 2004
- UK Formula Ford Winter Championship. 2nd overall.
- Formula Ford Festival – qualified 7th in heat, and finished 11th overall in grand final.
- Formula Ford testing with several top teams. In limited outings Duncan impressed, culminating in one dramatic round of the Avon Tyres championship in a Zetec powered Formula Ford. Running as high as 2nd from the back of the grid, Duncan was forced into retirement following contact with another competitor.
- 2003
- Formula Zip Championship – last three rounds only. Best result 3rd overall in the final round of the championship in only his third ever single seater race meeting.
- TKM Festival – 1st First Final, 2nd Second Final.
- Super 1 Formula A category – 3rd overall.
- 2002
- Super 1 in the highly competitive Intercontinental ‘A’ class. 2nd overall.
