The meadow brown butterfly (Maniola jurtina) is common across the British Isles during the summer months.
Females have an orange patch on each wing surrounding a black eye spot with a white pupil. Males have smaller eye spots and much reduced orange patches, or none in the example here which is likely to be a male.
Regional variations in the spotting pattern on the wings have led to it being studied extensively by geneticists.
The caterpillar feeds on a wide range of grasses so typical habitats for this species are meadows, hedges and woodland rides.