No surprise about Proton Beam being reserved for cancers where it's superiority over Photon treatment has been proven, so PCa will not be covered. Clatterbridge have had a low Powered Proton Beam facility for over a decade but it is able to treat little more than eyes. Members of a US forum report favourably on Proton Beam for PCa but it has to be remembered that many men like to feel that they were justified in their treatment choice, particularly where it was expensive.
Regardless, it would be interesting to know whether The Christie have their Proton facility treating patients yet. UCLH in London is the other UK centre that will provide this form of Hadron treatment but again most unlikely for PCa, except perhaps in a very limited study.