Virgin trains are not running on the east coast main line between Newcastle and Edinburgh this weekend.
Engineering work is taking place between Alnmouth and Berwick-upon-Tweed with various line closures.
CrossCountry services between Newcastle and Edinburgh are replaced by buses.
Virgin Trains East Coast will run an hourly service between London Kings Cross and Edinburgh via Carlisle, with journey times extended by up to 90 minutes.
Non folding bicycles are not allowed on rail replacement bus services at any time. Folding bicycles are allowed if fully folded.