Look for plants suitable for shade, some of the pale heuchera maybe
What I strongly suggest though is to go to S on Goypedia ( the alphabet below)
there's topics there on shade planting, and shade container planting hope it helps x

You might consider the many varieties of Hosta.

Thank you to both of you.

I will take a look below Pam.

I will look in to Heuchera and Hostas.

Well I'm confused, maybe I'm still sleepy but I don't understand what you mean by 'concerted' by the Council. And a photo of the area would be really useful - am I right in understanding you want plants in pots, not in the ground, because there's no choice?

Oops. Spelling mistake. I meant to say 'concreted'. Yes, there is no choice but to use pots. I will try and add a photo a little later.

I've just bought a Sarcococca which is an evergreen that flowers in winter. Mine is in a pot against a north facing wall. It seems very happy.

Ah, concreted, okay... all the following are evergreen: Sarcococcas, any variety, Skimmia fragrans, Liriope Monroe White, Prunus Otto Luyken all tolerate deep shade well. Mahonia aquifolium does too, but its growth habit means it won't look too great in a pot as it grows.The other Skimmias do prefer a bit of a lighter situation, or an occasional hint of sunlight, but all are probably worth trying. Try Skimmia reevesiana - it doesn't need a male plant to produce berries, but does berry more if there's one nearby (Skimmia fragrans is male). If you're using a large pot and want a smaller plant in with a larger one, the Lamiums will do well (Lamium Beacon Silver or White Nancy) and may trail over the edge of the pots.

Thank You Arbuthnot. That is quite a list Bamboo. Thank You. I didn't realise there were that many plants that would tolerate that much shade.