The Mk XIX was the final unarmed reconnaissance version for the R.A.F. and some 225 were supplied to squadrons shortly after the war. It was basically a Mk XIV airframe with modified Mk VC wings and had a universal camera installation. It was a P.R. 19 (PS888) that had the distinction of making the last R.A.F. operational sortie by a front-line Spitfire, in Malaysia, 1st April 1954.
Source: http://www.rolls-royce.com/history/heritage/corp.jsp