The aircraft except for the Red Arrows held in the air with the Red Arrows taking a 30 minute delay on the ground. ( the other aircraft were airbourne prior to the delay being issued)
Pictures were received from 2 helicopters - either side of the display but only the one south of the display (at Vauxhall) was a press helicopter and this is the one obtaining the pictures you saw -
hope this helps -- wish I'd seen it for real and not on RADAR
FC