No interactions present.
The simplest way to tell the difference if the bird is close, is the appearance of the spots - in song thrushes they are almost inverted V-shaped. In mistle thrushes they are more sharply defined and diamond-shaped.
Mistle thrushes are also quite a bit larger and greyish about the head. They are also far less tame/easily approached.
I am pretty sure that this is a song thrush, judging from the the black and white speckled chest. They are found throughout all of England, Wales and Scotland.
Lat/Lng: 53.7, -2.9
OS grid ref: SD4330