Confidence: It's likely to be this, but I can't be certain.
Notes: This is a pipit. Certainly not a skylark: bill too straight and fine and no crest. Face pattern is not Skylark and the whole bird looks too slim and attenuated. As for pipit species, the legs look orange rather than pinkish, though this is a tricky colour pair to pick on photos, the hind-claw looks reasonably short and the flank streaking looks to be quite fine, which leads me towards Tree Pipit rather than Meadow - but this is more tricky; perhaps Tree or Meadow would be a safer ID.