Mr Ridgway insisted that air travel was a "different market" from rail services between Manchester and London. The airline will operate three daily flights to Manchester using Airbus A319 aircraft from March 31 next year.
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Ukip's ruling committee unanimously backed a vote of no confidence in Mr Bolton on Sunday and six key party figures have also resigned.
The announcement caused the organiser's website to briefly crash.
Tuesday morning's weather for the west of the region