Question to the Ministry of Defence:

To ask the Secretary of State for Defence, how much his Department has spent on each long lead item for the Successor submarine; and how much his Department has spent on the Successor submarine programme to date.

As of 31 March 2014, the Ministry of Defence had committed £230 million for long lead items. From within this, the following individual items have been ordered:

Weapon Handling and Launch System, at a cost of £11.8 million;

Gearbox and associated equipment, at a cost of £6.6 million;

Pressurised Water Reactor 3 reactor plant and associated main propulsion systems, at a cost of £58.8 million;

Since 31 March 2014, additional orders have been placed with the US Department of Defense as follows:

Material to support the manufacture of missile tube components, at a cost of $27.4 million;

Missile Tube Long Lead Materials, at a cost of $52.8 million; and

Material to support the manufacture of integrated tube and hull fixtures, at a cost of $7.6 million.

This level of commitment is in line with the Initial Gate approval.

The total programme spend at the end of financial year 2013-14 was £2,068 million.