Sources confirm that the Transport Secretary will be publishing interim findings of the Laidlaw report into the West Coast fiasco later.
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Rain will affect northern England and Wales later in the day, particularly over the hills. Elsewhere it will be drier but breezy.
The Chancellor will promise to fix a glitch, which means repayments continue to be taken for up to 12 months after the loan is paid off.
The proposal will see the introduction of a discounted railcard for 26-30-year-olds, as the government looks to lessen the cost of living.