A chronological list of the British butterflies I’ve seen during 2018.
I’ve compiled this list as an aide-memoire, so I know which butterflies to look out for in which months in future years and, as I’ve compiled the list after the fact, my photos were not necessarily taken on the date of the first sighting.

5 April, St Mary’s Well Bay

1. Peacock
   
2. Red admiral
   

14 April, Grangemoor Park, Cardiff

3. Brimstone
   
4. Comma
   

14 April, Zigzag track, Penarth

5. Speckled wood
   

30 April, Cosmeston Lakes Country Park

6. Orange-tip
   

15 May, Lavernock Nature Reserve

7. Holly blue
   

15 May, Lavernock – Penarth coastal path

8. Green-veined white
   
9. Large white
   
10. Small white
    

17 May, Cosmeston Lakes Country Park

11. Common blue
    
12. Dingy skipper
    

23 May, St David’s Vale

13. Small heath
    

31 May, Cosmeston Lakes Country Park

14. Meadow brown
    

2 June, Cosmeston Lakes Country Park

15. Large skipper
    

8 June, Aberbargoed grasslands

16. Small copper
    

13 June, St Augustine’s churchyard, Penarth

17. Painted lady
    

15 June, Ely embankment, Penarth

18. Small tortoiseshell
    

18 June, Lavernock Nature Reserve

19. Ringlet
    

22 June, Old Castle Down

20. Dark green fritillary
    
21. Small pearl-bordered fritillary
    

25 June, Lavernock Nature Reserve

22. Small skipper
    

28 June, Forest Farm Nature Reserve

23. White-letter hairstreak
    

30 June, Cosmeston Lakes Country Park

24. Gatekeeper
    

1 July, Rhossili

25. Grayling
    

13 July, Arlington Reservoir, East Sussex

26. Marbled white
    

13 July, Abbots Wood, East Sussex

27. Purple hairstreak
    
28. Silver-washed fritillary
    
29. White admiral
    

17 July, Dungeness, Kent

30. Brown argus
    

18 July, Seaford Head, East Sussex

31. Chalk hill blue
    
32. Small blue
    

5 August, Rumney Great Wharf

33. Clouded yellow
    
34. Wall