Judging by what a none nuclear Swedish Sub did to the Ronald Reagan and Battle Group during an exercise some years ago, and lived to tell the tail you do not need to have massively expensive systems. The cost of the said sub was equivalent to one of our much vaunted new fighters. As the Russian defence minister said about the new carrier when commissioned "it is just a big target". I know the idea is about power projection, but given our straightened circumstances and our potentially even poorer economy, are we still in the power projection league, or do we want to be ?
Regards
Mr Mac