Are they a sequence of stages of the same spike on different days Nicola?
They all show Date Taken:- 29/4/16 but if I am interpreting the file dates correctly, they were taken on 10th, 17th, 20th (no 3 and no 4) 22nd and 29th. Is that correct?
I'm curious as to the Date Taken being 29th for them all (as automatically determined by Ideas Genie I assume) so may I enquire - What type of camera did you take them with?