This is being discussed in the England forum but thought I'd mention it here as well for those on upcoming RS trips in the UK who might not be checking the other forum.
According to https://www.theweek.co.uk/news/uk-news/956853/rail-strikes-how-much-chaos-will-walkouts-bring there will be a 24 hour tube strike in London on June 6th.
Nationally https://news.yahoo.com/rail-strike-2022-train-dates-when-network-rmt-124909684.html reports most rail service will be on strike beginning in mid-June
Those planning travel by rail in before or after their RS tour who could be affected might want to book bus tickets on National Express as a backup plan.