Cricketers, rugby players etc Englands squad for the upcoming world cup will have a number of foreign players who qualify under residency as do Scoltland and the rest, mostly players of south seas, New Zealand or South African descent, those generally the ones who couldn't make the All Blacks teams.... Vunipola is hardly a well known english name and there can't be many Faletaus in the Welsh valleys... I will applaud Lancasters and the RFU's rules that to be selected you must actually play in England, that's upset many of the prima donnas who went to France for better money.
Sport is very much run under a flag of convenience these days. In Froomes case it suits him to use here as a flag, it's very much suits the Sky programme as well.
Please remember this about Chris Froome, in 2010 he was a donkey that Sky were trying to ship out to anyone that would take him, no one would. With nothing to mark him out as any good before 2010 his progress has been "miraculous" since 2011....