When I went from Lightning to the Tornado F2(!), the spec said that the Tornado would get to 25,000 ft a few seconds quicker than a Lightning. This was true in reheat, but if you relied on cold power only, the Lightning would have got there, finished it's sortie and pilot would be back in the crewroom while the Tornado was still climbing!
Ch***t Steve you still in Oman?????
Ref the above quote - yes provided the Lightning's target was just off Spurn Point!