The £38 billion revamp to Britain's railways is "a bold plan" but one "customers expect and want to see", the head of Network Rail has told Daybreak.
Mick Carne explained: "We are going to spend about £13bn in the operating and maintenance of the railway, but about £25bn on really making substantial improvements to the railway."
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The PM faces a countdown to settle a deal before her minority government tries to get its Queen's Speech plans approved by the Commons.
More details will come today on proposals to offer EU residents the right to a new "settled status" in Britain after it leaves the bloc.
Scotland and Northern Ireland could see rain later but for the rest of the UK it should be a fine day.