Yeah, but anything we build today, such as aircraft carriers and aircaft ends up as a Euro-collaboration, with quite a few different European partners, and is still stuffed full of tech we have to buy from the Americans (and usually ends up costing anything from double the price upwards of what we would've payed buying it straight from the Americans, and more likely than not doesen't work half as well)! So not only are we giving the Americans a veto on how we use the stuff, we're also giving our Euro partners a veto (French, Germans, Spanish etc). Foreign policy wise, who're we more likely to go along with, the Americans, or the various European states we've had to partner with?
We probably did ourselves a big favour selling those Type 42's to the Argentinians! They might have spent the millions on something useful, like infantry, A4 Skyhawks, or even Exocets. In the Falklands, didn't we just use the Type 42's as big, multi-million pound missile and bomb traps? Surely there's cheaper ships to use as sandbags?
Edit:
Sorry if I come off a bit 'uppity', Ninja. I realise you've got a lot more first-hand experience of this than me.