So lets cancel the Trident replacement. In reality the UK cannot afford it; is not in the business of city destruction anymore; and the money could be better spent on providing the conventional forces with the kit, support, pay and accommodation they need and deserve. As an example, look at the reports over the weekend of sub-standard medical services out-of-theatre.
If the Navy Board want big boys' toys, and career paths, they need to choose between SSBNs and the flat-tops. Personally I see the flat-tops and attendant aircraft and surface protection fleet as being far more flexible to use against the reported threat.