ferns? they aren't necessarily grasses but love deep shade and look good.

Thanks for answering Wildlife. Yes, ferns are great for shade; I thought some grasses would complement them.

Carex coman 'Frosted Curls' and the bronze form are both shade tolerant.

Species of Liriope and Ophiopogon, maybe?

Thankyou Jaykaty and Tugbreth. I wil certainly check these out.

Luzula sylvatica will grow in shade, even dry shade, but it is too vigorous for a small space. Millium effusum 'Aureum' likes damp shade.

My Stipa Anemanthele lessoniana (used to be called Stipa arundinacea) is very happy in shade, and for part of the year turns gently bronze.

I had to get rid of that one, Sheila. It seeded all over the place :-(

It obviously loves your garden to bits, Andrew! Mine seeds itself, but only gently - just now and again - which I'm very happy with :)

Wow! Thanks everyone. Lots of suggestions to check out which I will enjoy doing.