What to grow? – Slightly acidic, clay loam, former braken 40m x 10m

(South Wales, UK)

Recently “reclaimed” a part of my familys small holding (40m x 10m) that was formerly covered in bracken. A rogue hawthorn and sloe bush have managed to survive the braken, so I’ve kept them in honour of their efforts.

I did this at the start of November, which involved cutting, removing and then breaking up of the soil to expose roots to frost.

The presence of braken makes me think it sits around 6-7 ph, and personal knowledge and BGS soil maps show the land as clay/clay loam.

My hope is to get atleast 1 large and 4 medium apples trees in and plant some vegetables and grains in whilst they grow, working around the trees once mature.

Bracken will definitely reappear as it surrounds the patch, that’s fine, but I’d like to avoid a monoculture of it like in the past, so I can deal with it individually.

What are some suggestions of things to plant whilst the trees grow that will aid them, resist/survive the bracken and be tasty/appealing to the eye?

Thanks.