Any ideas what to grow against East facing fence heavy clay

Pyracantha, if you don't mind thorns, or climbing hydrangea (H. anomala), or Fatsia japonica. If you want something not so tall, Skimmias, Hydrangea "Quadcolour", Pieris japonica.

thank you Bamboo I have Pyracantha
great berries for the birds

I think I will try hydrangea (H.anomala)
and Skimmia

I had better get cracking while weather
is good for new plants

Sparkle - I am in Berkshire and my garden will be open next spring (April 25th). Part of it is on heavy clay. Why not come and see what is growing for me?

I will make a note when your garden is open as I think I live in the same town as you.

Spring should be a lovely time to visit