There is always money, we just have to decide what to do with it!
The Defence Equipment Plan 2014
Para 11,
e. retain unallocated headroom of £8bn.
EP Headroom. The headroom is in addition to the funding
required to deliver the Core Equipment Plan and will allow us
to fund, incrementally and flexibly, a number of additional
programmes that are a high priority for Defence, when they
are required and when we can be sure that they are
affordable.
https://www.gov.uk/government/upload...ersion-2-1.pdf