National Rail strike: Only travel if your journey is absolutely necessary on Great Northern, Southern and Thameslink on 18 and 20 August; travel later on the mornings after
Passengers should travel only if absolutely necessary on Southern, Great Northern and Thameslink on Thursday 18 and Saturday 20 August and the mornings after on Friday 19 and Sunday 21 August due to next week’s strike by RMT members at Network Rail and UK train operators