Re: Less is more?
"There's a continual trend for fewer, more expensive defence assets."
they're probably looking at a number of conflicting issues, political as well as economic, as to why to do it 'that way'. But they're "not wrong" in the approach they've taken [just not IDEAL I would guess].
I prefer the "more of the less expensive variety" approach, though. It tends to suffer losses with a greater chance of rapid recovery, like the way things were in WW2, ya know?
Back in WW2, US and UK produced a great deal of fighter aircraft (like P-51s with Merlin engines in them) that were significantly LESS advanced that ME-262s. But the ME-262 was expensive and hard to build.
End result: overwhelming numbers with "good" but not "great" tech WON THE WAR over the "superior" tech. Obligatory reference to Arthur C. Clarke's "Superiority".
Now fast forward to the 21st century, and potential for "see I told you so" by Arthur C. Clarke...
1. There _IS_ a need to develop new tech. You need at least SOME 'bleeding edge' war machines.
2. There are ALWAYS problems when you're on the bleeding edge of tech, and fixing a ship usually involves more than just calling out for a repair tech (think drydock).
3. There should ALSO be a fallback of "traditional tech" you CAN rely on. So rather than sinking the entire budget into a brand new class of ships, you should be upgrading the old ones, too.
4. There's an implied need to balance the financial, personnel, and political implications of "all of that"
Back in the 80's I was on a 688-class sub. We had a "fix" for the main engines, that was later "fixed better". We had a 'workaround' for a problem with the shaft and bearings that was eventually "fixed properly". We changed propellers 3 times in the short time I was on the sub (~4 years). Each of those 'fixes' required a month or two in a shipyard drydock. Those are expensive and limited resources. but it DOES reflect the effect of 'bleeding edge' tech, since the 688 class submarine had only been around for a few years at that point.
Since then, there have been a LOT of 688 class submarines, which ultimately led to 2 newer classes [the most recent of which seems to be designee for lower cost and high reliability].
Anyway, I expect the Royal Navy has this *kind* of thing in mind and, unfortunately, it might mean some down time for their ships while problems are ironed out. So, for now, some 20+ year old U.S. frigate will probably remain 'on station' while it's getting fixed...
/me notes that LESS spending on Austerity, and MORE spending on military, means that you buy something that's made in the UK, meaning jobs instead of 'need for austerity', and you ultimately get "a ship" instead of "more hands out begging for more money". You get what you pay for, ya know?