In answer to Medard's question - your first two skippers are large, and the others small.
I've been without bike and unable to travel recently, but picked the bike up again today and got my own first small skippers of the year:
No possibility of ID confusion there!
I also saw my first silver-studs of the year, at a local site I didn't discover last year until too late. I was struck by how narrow the borders were:
In contrast, the males at a different site I found last year all had broad borders:
This species seems to show incredible variation between colonies, even in a single region like the Suffolk sandlings.
In the morning, white letter hairstreaks were again sparring above the master elm in the meadow:

(zoom x 60 and cropped)
Guy