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"Boris Johnson’s plans for a proposed airport hub in the Thames Estuary would require £30bn in public subsidy, and would not be commercially viable, an unpublished parliamentary report has found.
According to Professional Manager magazine, the report, by transport consultancy Oxera for the commons transport select committee, shows that the expected revenues generated by the airport – dubbed Boris Island on account of London mayor Boris Johnson’s support for its construction – would be insufficient to justify building it, without a massive contribution from taxpayers.
"... A source told Professional Manager:
"There is [also] nothing to stop Gatwick building a new [competing] runway. This [report] assumes no other runways are being built."