A small, brown, streaky bird with a high piping call. Pale legs
No interactions present.
Chris is right with Linnet. If you look at the beak, it is short and deep, like a finch. In contrast, pipits have a longer, narrower beak. Also, this bird has an upright stance and has grey on the head and fairly bright, plain brown on the wings...pipits are more streaked on the head, wings and breast. If you Google pictures of Meadow Pipit, you will see the differences.
Linnets crop up all over the place and a lone bird can be a puzzle sometimes!
My Flickr photos...
Lat/Lng: 51.6376, 0.6473
OS grid ref: TQ832965