Mrs May met with the officials this month and was given an update on the electrification of the Great Western Mainline, the redevelopment of Maidenhead station and the introduction of Crossrail.
She used to the meeting to press for and emphasise the importance of quick services from Maidenhead and Twyford Stations to London Paddington.
She said: "It is good to hear that improvement work is progressing, with electrification of the line underway and work to redevelop Maidenhead station on the way.
"As I have consistently said, fast services from Maidenhead and Twyford must be the priority and these must be at the centre of plans for the future of the line."
Mrs May was also told about plans to improve accessibility at Maidenhead Station for the arrival of Crossrail to ensure step-free access to all platforms.
The Twyford MP also raised concerns about an 'ugly' new metal bridge in Duffield Road, Woodley which residents say is out of character with the surrounding rural area.
She said: "I understand that some of the existing bridges need to be replaced in order to make way for electrification of the line, but the new bridges need to be in keeping with the local area and not eyesores like the one in Duffield Road.”
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