I was surprised to find this growing on the verge near our house. Perhaps because it seems a bit early for Borago officinalis?
It is not a native but has been grown here for about 800 years. It's not really naturalised and exists as a garden escape. It is increasingly planted to attract bees.
Despite the off-putting hairiness, the leaves and flowers are nice to eat, having a cucumber flavour. The flowers can be floated in drinks or frozen first in ice-cubes.
An odd footnote: it is not mentioned in Mr Grigson's book. Weird.