A selection of clifftop birds

Enjoyed one of my favourite walks yesterday morning, along Flamborough Cliffs between South and North Landings. Along the way I took these shots which I am struggling to identify with certainty. Firstly this little chap. Chaffinch??

Two pictures of the same Lark (?) or Pipit (?)

I'm thinking this may be a Commom Whitethroat

and finally the real challenge! Can anyone make anything of this fast-disappearing bird?

Many thanks for looking

Ian