Supermarine Spitfire Mk.IIa BBMF Supermarine Spitfire Mk.IIa, P7350/XT•D, No.603 (City of Edinburgh) Squadron: 2001-2006. Supermarine Spitfire Mk.IIa, P7350/XT•W, No.603 (City of Edinburgh) Squadron: 2006-2007. Supermarine Spitfire Mk.IIa, P7350/XT•L, No.603 (City of Edinburgh) Squadron: 2007-2008. Supermarine Spitfire Mk.IIa, P7350/QJ•K, No.92 Squadron: 2009. Supermarine Spitfire Mk.IIa, P7350/EB•G, No. 41 Squadron 2014. Spitfire Mk IIa P7350 is the oldest airworthy Spitfire in the world and the only Spitfire still flying today to have actually fought in the Battle of Britain. She is believed to be the 14th aircraft of 11.989 built at the Castle Bromwich 'shadow' factory, Birmingham.