If you're not going to fit the SPY-1 radar system the F100 is designed around, why bother with the F100? Why not start with the De Zeven Provincien/Type 124?
Unlike the F100, they have a separate long range radar & targeting radar, which your mention of Samson implies your hypothetical ships would have.
BTW, how do you start building a modified F100 starting in the early 1990s? The agreement between Spain, Germany & the Netherlands on a common(ish) hull was made in 1994, & the first ship was launched in 2000. You have us building a batch of 6 ships based on that design before the first unmodified ship was launched!
Sorry I meant a F100 "type of" ship (ie County/T82 concept rather than T42), and yes agreed an earlier verion of Sampson, not SPY-1, matched to a VL/Sea Dart, in Batch 1s. Although I would not belittle the design work in construction a 7000t ship, I don't think it is the hard part of a AWD; an upgraded T23 propulsion version of the T82 would have been an start. Who knows the Spanish might have brought the design instead of the F100! If Sampson had not been available it could have been fitted to the Batch 2 in 2000s. This approach would have avoided such a complete redesign which is the risky part of T45. Apart form the 4.5" gun nearly everything seems to be new.
Funding must be considered alongside tasking. We've spent a lot of money on two wars in the last decade. It's very easy to say the UK isn't funding its armed forces adequately - for what they are being asked to do.
BTW, expenditure has been dropping as a share of GDP. IIRC it was 2.4% in 2005, & is about 2.1% now.
Agreed but even with the war funding that comes from the Treasury reserve, we are still in the top 4 along side France, and they build their own nuclear deterrent and have need for a larger army. Its difficult to say they are underfunded. I sure by the time the defence chiefs, civil servants and politicans have collectively wasted half of it, money is tight.
Type 12 was built from the 1950s to (in its Leander-class incarnation) 1973. Sea Sparrow didn't exist until after the last one was built. It could not, therefore, have had Sea Sparrow unless retrofitted.
Type 21 was a cheap gap filler, hurried into service. Sea Sparrow wasn't ready until a couple of years after T21s started being commissioned. A gap filler which has to wait for a new weapon system to be built fails in its primary purpose.
We built ships with Sea Wolf instead of Sea Sparrow. It entered service 3 years later. It's still around, & still effective. Are you saying that we should have fitted Sea Sparrow to Type22 instead of Sea Wolf? Since it was a foreign system, it's unlikely we'd have got it significantly earlier. In 1982, we'd have been in much the same position, with Sea Cat equipped T21s & Leanders, & some T22s. The only difference would have been that the last would have had Sea Sparrow instead of Sea Wolf. Would it have made a difference? I don't see why.