enabling companies in transport, including in rail and passenger rail, to put in place minimum service levels. that basically means you would require a certain number of staff to work to ensure a certain amount of service. it's not clear yet whether the train companies will use that in this upcoming series. if they do, it could mean more trains run, but it would make the unions even more angry. katy austin there. junior doctors in wales have begun a three day walk—out junior doctors in wales have begun a three—day walk—out in their dispute about pay. they've rejected the welsh government's offer of a 5% rise. the bma said its members had been "forced" to take the "difficult decision" to strike after seeing their pay drop by almost a third over the past 15 years. hwyel griffiths is at the university of hospital of wales in cardiff. the impact of this strike is being felt in every single hospital. junior doctors make up some 40% of the medical workforce, so the impact here at wales's because hospital in