Spoken to Lib Dem source who expects disciplinary action against @davidwardmp to be tougher this time than on previous occasions.
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The retailer has made its first job cuts since falling into administration last week.
A public inquiry is to be held into proposals by the oil and chemical firm INEOS to explore shale gas reserves near Chesterfield.
Members of the RMT on Arriva Rail North (Northern) walked out for 24 hours, with more stoppages due on Thursday and Saturday.