The programme to maintain the UKs nuclear deterrent beyond the life of the current system, with the introduction into service of the first of a new class of submarines in 2024, is at an early stage, but the Ministry of Defence has made good progress establishing programme management arrangements and engaging stakeholders. The timetable is challenging, however, with very little room for delay, and the MoD needs to manage key risks if continuous nuclear deterrence is to be maintained.>> The programme is currently in a two-year initial concept phase for the new class of submarines. This requires a series of important and difficult decisions to be taken by September 2009 to keep the programme on track. The MoD has appointed a Senior Responsible Owner to co-ordinate these decisions and other work to inform future decisions and to allocate funding to the various elements of the programme.>> The current predicted cost of procuring the new nuclear deterrent is between 15 billion and 20 billion (2006-7 prices), as outlined in the 2006 White Paper, The future of the UKs nuclear deterrent. The operating costs for the deterrent once the new class of submarines comes into service are estimated to be similar to those of the current deterrent. These are initial estimates, however, and the MoD recognises the need by September 2009 to produce robust estimates of whole-life costs. There are major areas of uncertainty in the budget, including the provision for contingency and VAT, which need to be resolved.>> The submarine industry is a highly specialised industrial sector with a number of monopoly suppliers and there are real difficulties in providing the right incentives for these suppliers to deliver to time and budget.