These are moths trapped in my Cambridgeshire garden that I have been unable to identify. If you can help please leave a comment or e-mail me at david.a.griffiths@btconnect.com.
The moth on the right is a bog-standard Small Square-spot with a forewing length of 17mm. The moth on the left has very similar markings but is much larger - 21mm fw - and has a distinct curve to the leading edge of the forewing. In the hand there is a distinct dark band about half way down the wings which doesn't show too well in the photo.
Edit: confirmed by dissection as Small Square-spot