§ Dr. David Clark
To ask the Secretary of State for Defence what is his Department's assessment of the Tornado F3 upgrade with EJ200 engines. 
§ Mr. Arbuthnot
My Department is currently evaluating a proposal to upgrade the Tornado F3's weapons systems. As a routine part of our evaluation process, we are examining the comparative costs of alternative options, including acquiring F-16 aircraft from the US. In assessing these alternatives we will take full account of all relevant factors, including the need for air-to-air refuelling.328W
§ Mr. Soames
The Tornado F3 is cleared to fly at a maximum height of 50,000 ft. In practice, however, the actual operating ceiling will be determined by a range of interrelated factors, including weapon and fuel load, environmental conditions, and others.