One a a few truly magnificent "Whiffer" aircraft in military aviation history, the BAC TSR.2 could have been the world's best bomber in the late 1960s forward, even better that the VG wing F-111 by direct comparison. It was to have used Olympus 320-22R engines generating a max. thrust of 33,000 lb each, with TFR, IR, advanced avionics and fire control systems flying at Mach 2.25 up to 54,000 ft with a ferry range of over 4000 miles carrying 6000 lbs of bombs (conventional or nuclear) internally as well as 4000 lbs of stores externally!!! Good enough speed to outrun fighters at height and excellent at low-level too. The prototype flew only slightly over 13 hrs and although orders added up to 49 a/c, the Labor Govt. cancelled the aircraft with lame excuses of cost overruns and delayed development time for critical systems. This cancellation left the RAF w/o a suitable strike bomber until the Panavia Tornado came along almost 2 decades later...

http://prototypes.free.fr/tsr2/imagewof/tsr2_07.jpg