At LHR today - A20. Was the only G0. Allowed through with pre-boards. Got slightly busy in the area because all the group 4+ who had their bags tagged were then allowed to the top of the escalator. However hats off to the gate agent who escorted me down in the lift first, by myself, before everyone else was allowed to start boarding (including pre-boards). Was #boardingnotboarding, but the thought was there.