http://news.bbc.co.uk/1/hi/england/london/6949056.stm
They also appear to be at Farnborough as well as Biggin.
Not that chaining oneself to the gate should cause disruption in its own right but sure we can all see a whole raft of new unnecessary security controls coming soon to GA fields - and cost to the operators.
** - Updated to note the above news link is now reporting the arrest of the protestors, who are claiming their prime objection to the Biz Jet users is because they are rich
