I noticed the goldcrest in the branches of the buddleia and it eventually came down onto the feeding tray of my bird feeder picking up tiny bits of food that had been dropped by sparrows and tits feeding on the fat balls.
The goldcrests plumage is olive above and buff white below, with darker wings displaying two white wing bars and an orange or yellow crown stripe flanked by a black edge.
Adult males have an orange or orange-yellow crown stripe, in the female the stripe is yellow. In the photographs the head stripe appears to be orange so this goldcrest is probably a male. Looking at the video the crest looks more yellow - but maybe due to poor light and damp windows.
After clearing up all the scraps from the feeding tray, the goldcrest flew back up into the buddleia and after a few seconds surprised me by flying onto the birdfeeder and eating tiny bits from the fat balls.