So why shouldn't MAN work? The airport serves a densely populated and economically vital catchment area from which VIR will draw connecting passengers onto its long-haul network. The VIR domestic service will also be offered to other carriers requiring LHR feed which do not wish to rely on direct competitor BA for connections. Whilst there is certainly a case for GLA, it is wishful thinking on your part to presume the city a better choice than MAN.