Pressure from green groups and train companies appears to be making a dent in the internal U.K air travel industry.

The environmental debate, backed by a green advertising campaign from Virgin Trains has especially affected Manchester Airport where Manchester-London flights have fallen by 10% over the past year.

One airline group, Jet2, a low-cost airline, dropped its London-Manchester route recently due to poor demand.

Train companies such as Virgin and Eurostar have targeted airline passengers over the past year with Eurostar claiming its trains emit 10 times less carbon dioxide than planes travelling comparable distances.

Manchester to London services have also suffered due to the heightened security rules put into place at other U.K airports, where travellers are tiring of queues and other hold-ups.