They should fence it in accordance with the old AM blocks which are still to be found in the undergrowth in my view :-)
Seriously though, there does need to be some sort of barrier because sooner or later someone will be hurt either because of operations or because of their own stupidity.................. either way it will put the tin hat on operations at Kenley and will have wider ramifications.
So lets get the fence built - I expect JM is currently saying 'We will build a fence - and the City of London will pay for it.....................' (one for all you Trumpsters out there)
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