Question to the Ministry of Defence:

To ask the Secretary of State for Defence, when the Third Tier arrangement between the UK and the US for responding to an accident in the UK involving US nuclear weapons was last reviewed and updated; and what the dates and locations of (a) the last and (b) the next scheduled tabletop and field exercises conducted under the auspices of that arrangement are.

The Third Tier Arrangement was last updated on 27 March 2014. The most recent tabletop and field exercises conducted under the auspices of the Arrangement, Exercise DIAMOND DRAGON 2015, were held in Suffolk over the period 30 June to 2 July 2015. The dates and locations of the next tabletop and field exercises are yet to be agreed.