Er, exactly what is in this for the UK? The US sells the Australians three Virginia Class SSN's in the 2030's. The UK blows £3bn of the £5bn extra allotted to defence over the next 2 years on the ability to build an Astute replacement in the 2040's with the Australians based on a design that we were going to build anyway? So, all we get is a diluted design input to the Astute replacements and a workshare deal with the Australians and the US, thus reducing our existing build and design capability as it will now be a three way collaboration even though the new boat will only be operated by the UK and Australia and not the US.
Did the same clowns who negotiated Brexit and the NI Protocol do this one as well?