Ivy starts to flower in October, when most other plants have given over blooming.
The flowers attract large numbers of feeding insects, especially on sunny autumn days.
The insects are so fixated on their tasks that they can be approached quite closely. It’s possible to get photos which show details such as the transparent wings and hairy legs and body of this bee.
The bee may have just set out for the day: there are only a couple of grains of pollen sticking to its body.