Book excerpt: The Committee has serious concerns following the decision in the 2010 Strategic Defence and Security Review (SDSR) to cancel the Nimrod MRA4 maritime patrol aircraft (MPA) programme. Although the MoD's own capability investigations have concluded that a MPA is the solution to the UK's maritime surveillance requirements over the next 20 years, the MoD has postponed any decision on a further MPA until at least the next SDSR in 2015. The MoD has acknowledged that the resultant capability gap cannot be completely covered by an existing single asset or collection of assets. The Committee is concerned that the MoD is sending mixed messages in respect of the need for a maritime patrol aircraft. On one hand it says that there is no requirement for such an aircraft and that it is not funded or in the programme but on the other hand it acknowledges that its absence is a risk and something may need to be done. The Committee is also concerned about the withdrawal of other maritime surveillance assets. However the report acknowledges the work the MoD has undertaken to explore the potential options for maritime surveillance in the longer term, such as unmanned systems, lighter-than-air vehicles and space technology. The report welcomes the establishment of the Maritime Security Oversight Group and the National Maritime Information Centre as first steps towards a more strategic and co-ordinated output and as a way of mitigating some of the capability gaps