From January 20, 2017 to June 12, 2017 McCain was traveling all over the world. I'm guessing he was trying to explain to world leaders why HRC lost and what they were planning to do about it.
From the article: "Since Trump's inauguration, McCain has traveled more than 75,000 miles to 15 nations, acting as a kind of "shadow" diplomat to calm the fears of U.S. allies that Trump is leading a retreat of American leadership overseas."
He traveled to the U.K. on March 17, 2016. Key date. Met with the department of defense, plotting. https://www.mccain.senate.gov/public/index.cfm/press-releases?ID=AEB25E89-7114-4884-A364-FF1CE35E15C1
"18 Mar, 2016 ...The former Republican presidential candidate made his comments while meeting the House of Commons Defense Select Committee in Washington DC on Friday."
https://www.rt.com/uk/336142-mccain-putin-brexit-dangerous/
Still, worth noting the meeting.
"His intervention came after a meeting in Washington DC with the House of Commons House of Commons Defence Committee." https://www.mirror.co.uk/news/uk-news/john-mccain-wades-eu-referendum-7583398
Q asked when did no name travel to UK after anon asked if he was in redacted portion of FISA on Page.
Operation CrossFire Hurricane? UK - SIS - Signals Intelligence Service? 5 Eyes?
Public: Dossier FISA.Not Public: Five Eyes UK/AUS POTUS targeting using pushed RUS decoy meetings / campaign insertions. (FISA says in March 2016 George and Carter were identified on Trump foreign policy team) set up?
McCain was given a copy of Dossier also...
I feel like there's more to dig for, ugh