although the tsr2 designs looked promising the uk government decided not to persue the project before it got off the drawing board due to cost.
the project was resurected as a joint anglo french agreement but the french were unhappy with the small wing area and demanded a redesign in this area.
unsurprisingly they put forward a delta design which was eventually accepted by the british under the proviso that they keep the blown control surface. the upshot of this was extremely short take off roll and larger payload and fuel.