I don’t have any sources at hand about the involvement of the British with Wahhabism in Xinjiang (other than the obvious, such as hosting the CIA/NED backed WUC and their sham so-called “tribunal”, who are in turn affiliated with the ETIM terrorist group), but i do know that British intelligence were the first through their presence in India to start meddling in Tibet and to try to foment separatism before the CIA eventually took over as the main funders and weapon smugglers there. That’s quite an interesting story that goes all the way back to the British invasion and attempt to conquer Tibet from China in the early 1900s. So they definitely have a history of meddling in China.

They also have a history of involvement with Wahhabism in the form of supporting the Saudis in the Arab revolt against the Ottoman empire, only to turn turn around and carve up the Middle East for themselves and the French.

I fully expect therefore to find British fingerprints in the attempted destabilization of Xinjiang alongside the American ones.