The Chancellor, George Osborne, has ruled out using tolls to pay for a new stretch of the M4 motorway around Newport. He dismissed claims that the Treasury was considering such a move as 'misreports.'
He told our Political Editor Adrian Masters that he's 'never seen or considered a proposal to toll the M4.' But he said he hoped to give the go-ahead 'in a couple of months' to a scheme to improve it which has been the subject of talks with the Welsh Government.
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More than a thousand riders will be taking part in a series of events in and around the town.
Some warm spells of sunshine will develop, although scattered heavy and thundery showers are also expected during the afternoon.
A yellow 'be aware' warning has been issued by the Met Office for much of Wales.