SAS, I’d guess that there are folks still in harness that recall the previous Westland UH-60 effort aimed at the Saudi requirement. The Saudi’s ended up buying straight off the line UH-60s at FMS ( Foreign Military Sales ) pricing-essentially what the US Army was paying. One would assume this could be one option here, and then, if the RAF needed some specific radio gear for instance, they could do it themselves. I’m not at all plugged in to the specific RAF requirements, thus my suggestion may be at odds with RAF needs.