aj said:

Hello
I'd like to put a hedge at the bottom of my garden, approx 25ft wide.
It would be nice to use native British species, that I could eat,
drink or use.

Where I used to live my neighbor had a row of red currants which made
a nice informal hedge. The currants never got out of boundsand needes
only minimal pruning. The area was also partly shaded.
--
Pat in Plymouth MI ('someplace.net' is comcast)

Any technology distinguishable from magic is insufficiently advanced.
(attributed to Don Marti)