Well there is the tale of one Lightning intercepting a U2 spy plane over the UK.
The only "combat" that the RAF lightning seen was shooting down a Harrier after the pilot had ejected, so could we say that it was combat proven? ;)
But the harrier got it's own back on the Lightning, the Lightning pilots after beating the F15 to 30,000 feet issued a challenge to the Harrier pilots but while the lightning was still taxiing to the runway the Harrier did a vertical take off from the pan and got to 10,000ft before the lightning got off the ground