The £1.5 billion deal will also see new fleet rolled out across the network.
South Suffolk MP Tim Yeo 'Considering His Position'
South Suffolk MP Tim Yeo's failed to be voted in as a candidate for the next general election by the local conservative group.
Mr Yeo is now fighting for his political career after his local party apparently refused to re-adopt him.
Mr Yeo, who was recently reinstated as chairman of the influential Commons Energy Committee after being cleared of lobbying allegations, is said to be "considering his options'' following the decision by the South Suffolk Conservative association.
Mr Yeo, 68, who served as environment minister in John Major's government, has represented the constituency for three decades, and won an 8,600 majority in 2010.
In June he was caught up in a newspaper sting and faced allegations that he offered to lobby ministers and 'coached' a business associate who was due to give evidence to his committee.
However, the cross-party standards committee found he had done nothing wrong.
Shadow Cabinet Office minister Jon Ashworth said: "Tim Yeo's deselection is another sign that under David Cameron the Conservative Party is reverting to type, with no place for those who thought he meant it when he said 'Vote blue, go green'.
"Just this week one Tory with modernising credentials has been deselected and another has quit, and David Cameron is trying to water down a green levy he introduced and even boasted about.
"It's more evidence of the death of Tory modernisation. David Cameron's party is becoming narrower and less open and moving further from the centre ground.''
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