Butterfly. (update)

I saw this butterfly on the plot yesterday.

Can anyone identify it?

sorry about the rotten pic, but only had the camera phone with me.

Update:

I have just found out it is a moth:

The Cinnabar (Tyria jacobaeae)
Wingspan 32-42 mm.

Resembling no other British species, except perhaps the burnets (Zygaenidae), this is a fairly common moth in much of Britain.

It is generally nocturnal, but is quite often disturbed during the day from long grass, low herbage etc. At night, it comes to light.

The distinctive larvae, with their yellow and black hoops, generally feed gregariously on ragwort (Senecio jacobaea) and other related plants.

The flight period is May through July.