Gloster Javelin FAW 9R subsonic all-weather interceptor.
Mach 1 up to 3000m.
A re-up of the Javelin. Quick to accelerate to top speed and holds velocity well in a turn. High wing area means lots of lift. Slow stalling speed and good high altitude handling.
Avoid hard maneuvering at speed, the delta wing can flare and cause a stall. You can ride the edge of it with a bit of practice, to get round corners faster, but be careful at low altitude.
Built in KSP 1.4
Updated with EVA access from front cockpit, redesigned crew cabin and drop tanks.