Scran,
My comment of the UK being the US's only real ally is based history, not just since 9/11 or the Bali bombing. Countries have signed up to support the 'war on terror' however, their motives are, quite naturally, based on self defence, not an alliance with the US.
The point I'm making is that no other nation, other than the UK, stands up and openly supports the US at every avenue. I'm not suggesting that everyone should however, Britain played a large part in getting several countries to see the US way of thinking during Veritas and allow US overflights, India being a prime example (they would no speak directly to the US administration on this matter).
Now, with such unrelenting support being shown to the US by the UK, is it really too much to expect some positive feedback, in the form of some trust on the transfer of technology, from them? If the answer is no, then the UK should look elsewhere for a Harrier replacement.