TSR2
I agree we'd gone off topic, apologies for my part in that ( though I stand by what I said & have not seen any reliable argument yet !).
The TSR2 had a very high wing loading, and despite the illustrations with Jaguar - style over-wing pylons was certainly not a fighter ( nor was the Jag' ) it was a largeish aircraft with tiny wings, would have been hopeless at higher altitudes - an example of how it should be done might be the B-1 Lancer...
Low level penetration is hopeless nowadays - radar isn't the only sensor to say you're coming - and as I mentioned, even in WW2 which countermeasures stop cannon shells ?!