Question to the Ministry of Defence:
To ask the Secretary of State for Defence, what collisions involving a nuclear-powered submarine and (a) another submarine, (b) another naval vessel, (c) a private vessel and (d) a merchant vessel have taken place since 2 April 2009.
Two such incidents have been recorded since 2 April 2009:
HMS Torbay grounded in the Eastern Mediterranean in April 2009.
HMS Astute grounded off the Isle of Skye in October 2010.