Edibles for hotter, dry, shady conditions?

So, our 'forest garden' has suffered a significant loss.  As we get hotter, drier summers in England, the shady spot the previous gardener chose to plant purple gooseberry plants is no longer suitable.  Most of them have died due to drought (it's a well-drained area), and successive heatwaves, when we've just not had to the water or the time to keep them watered.

Are there any edibles which people are growing successfully in these hotter conditions in England & similar climates (spells of 30-40C daytime, 20+C night time now)?  Perennials a definite plus!

The site is heavily shaded from the West & South-West, and starts to lose the sun after c. 2pm.  Plus there are six dwarf fruit trees (apple, plum & pear) which will be drawing up the moisture to a fair degree.

Many thanks!