Surprised to find iris still not out in Alice Holt Forest, Hampshire, today - and I searched the key areas well in sunshine. Also, Brother Neil failed to see any in Botany Bay, on the West Sussex / Surrey border. So, Bookham seems well ahead of anywhere else at present.
But, seriously impressive numbers of White Admiral, including quite a few females. iris tends to appear when camilla is well out - and it is well out in Hampshire now. Only a few paphia though, all male, and only a lone Purple Hairstreak, and just 2 fresh Ringlet.
The equation for the appearance of iris seems to be -
WA females+SWF+PH+Ri = PE
He must be imminent...