Chaffinches are very common in the UK, a strikingly pretty bird – even the female, which is less brightly coloured than the male. This October example is probably a male after its autumn moult.
This one was near a bird feeder at RSPB Fairburn Ings, but not actually on the feeder, just as it says in the RSPB book.
Interestingly, the name of this finch comes from its seed eating habit and the ‘chaff’ that is generated thereby.