It looks like a woodland plant that I would call Borage, is it the same thing? If so, it is a woodlander and should be happy in the shade.

Have not got it, but the write ups on it seem to suggest that it grows from sun to light shade. Not sure if it would do well then in deep shade.

I think it is a trachystemon o., which is in the same family as borage. The leaves and stems of borage are more rough and prickley.

Got it at work, don't know what it is but it's in deep deep shade.

Graham Stuart Thomas reckons it will grow anywhere - sun or shade, moist or dry. Bombproof in fact. And very invasive, only suitable for large areas

Great - just perfect, then. Thank you all. It is indeed related to Borage, I knew that. :-) The area is inside a wall and under an apple tree, so no problem about it being invasive. I was considering Euphorbia robbiae as an alternative, but I've got that elsewhere so this would make a change.

Borage Bee's,Bee's & more!! really enjoyed it until..
"what have I done" as seeds set on mass & grew. Removing was full on... Always Weeding paths while envisaging the horror to follow in my prolific patch if I missed one.…it was everywhere. Ripping a mountain prickles invasive weeds grasses etc well into dark..
Then Magic began- finally a borage covered heap. Weeks later everything vanished - activity underneath was amazing worms and bugs prolific. Now I can't get enough of it.. such brilliant green manure and the storks are full of moisture great for us here Down Under with water shortages at times. Though must get to it just on the last of the Flowers before they drop.
Pics of its Magic to follow soon as on phone.
My apologies- no profile yet.

Don't worry - welcome to GOY! I didn't buy a plant in the end, as it seemed a bit too 'thuggish' for my garden.