Eggs, eggs, eggs.

(Sigma 18-200mm f/3.5-6.3 DC @ 200mm)
So for anyone up for a challenge... Whose eggs are these?

(Canon 18-55 mm f/3.5-5.6 EF-S on 2cm extension rings @ 35mm)

 They were laid on a cherry tree leaf, neatly covering the lower half of it, and were seen on the 14th Aug.

(Canon 18-55 mm f/3.5-5.6 EF-S on reverser mount @ 18mm)
They are very small, around half a millimetre each, and a blue-grey colour with a slight hint of iridescence... They are definitely a moth or butterfly's eggs, but which species?

Software used:
UFRaw
ImageJ