§ Mr. Keith Simpson
To ask the Secretary of State for Defence how many spare Challenger tank engines are held in stock by(a) his Department and (b) the UK defence industry. 
§ Mr. Ingram
The Ministry of Defence holds 105 Challenger 2 Main Battle Tank (CR2 MBT) engines in stock. We are not aware of any CR2 MBT engines held in stock by the United Kingdom defence industry.