User talk:2A02:C7D:263C:F000:AD41:4530:310A:E3DC

March 2020
Welcome to Wikipedia. Although everyone is welcome to contribute to Wikipedia, at least one of your recent edits, such as the one you made to East Coast Main Line, appears to have been inappropriate, and has been reverted. Please feel free to use the sandbox for any test edits you would like to make, and read the welcome page to learn more about contributing constructively to this encyclopedia. Thank you. No explanation is given, here or in the linked article, as to what "Mk 3a/b/d" means in this context. David Biddulph (talk) 15:26, 1 March 2020 (UTC)