Granted they did go across the border and fly some long missions. But I think you will find that they didn't actually achieve a great deal. They spent most of the time doing 'goal keeper' CAPs just north of the Saudi Border whilst the Yanks were CAPing near Baghdad.
You'll also find that the GR4 had to put up with all those things and more by flying into Missile Engagement Zones (MEZs) to employ their weapons, a much more dangerous job.
After night one they were basically oxygen stealing and getting in the way of the people who REALLY helped win the war - the Bombers.
