One of the reasons. Oh dear.
• As an aircraft operating on a restricted foreign registration, the Vimy can only be flown in UK airspace under a special exemption from the CAA. Both because of and in spite of the unusual circumstances of this unique aircraft and its place in aviation history, the CAA has generously granted more, and more flexible, exemptions than it would normally allow in order for the Vimy to be displayed in celebration of the 90th anniversaries of those great flights in 2009 but does not regard the issuing of further exemptions as justifiable.
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