jayemm
I took a double-check and called final a second time just to check I hadn't misheard and could proceed.
Headcorn is an A/G 'drome - you can call final as often as you like, it's down to you to decide what to do ;-)
I felt concerned that a gust could easily blow a parachutist (they looked like trainees) towards the runway, but then assumed that the operators know what they're doing, and that everything was under control. Or is it up to me and my discretion as the guy flying the plane to go round/not land? Who has control in these circumstances?
I think you know the answer - you and only you.
It can indeed be interesting at Headcorn. I did my 3rd hour of solo down there, 6 or 7 circuits, with an Extra doing aeros practice *inside* the circuit - ie, halfway between the runway and the downwind leg. S/he was above me, then below me, then above me again, but always out there on my left. Eventually I got tired, and a bit rattled, and did a full stop.