United Kingdom, Strike, Level 2: Countrywide train strikes on multiple days between 13 December and 7 January – United Kingdom [Update 3] December 14, 2022December 14, 2022 [email protected]Travel Alert Update 2022-12-14 (2): Travellers should still be aware, that the second round of the Rail, Maritime, and Transport Union (RMT) strikes are scheduled to take place on Friday and Saturday (16 and 17 December).