Question to the Ministry of Defence:

To ask the Secretary of State for Defence, which of the items of equipment referred to in UK Defence in Numbers, published by his Department in August 2015, are (a) not capable of use on the front line and (b) have been retired.

The Defence in Numbers booklet is a snap shot of the UK's Defence capability and how we are spending the fifth largest Defence budget in the world. As well as giving details on civilian and personnel numbers and current operations, it also includes a list of the Ministry of Defence's equipment holdings, the vast majority of which are in service and deployable. We will continue to review the Defence in Numbers booklet to ensure that it best reflects the breadth of defence equipment.

The pieces of equipment listed in the Defence in Numbers booklet that are not capable for use on the front-line are: Jet provost aircraft, BAE-125 aircraft, Wessex helicopters, Challenger 1 battle tanks, FH70 Towed Howitzers and Chieftain Armoured Vehicles. These platforms are used in either a training or ceremonial capacity.

Currently 90 Tornado aircraft remain in the operational fleet and are, or could be, returned to combat ready status; this number includes aircraft undergoing periodic deep maintenance and modification which are not immediately available for operational use.