Re-dug the area around the plum trees, more bramble roots (it is they, not cockroaches, that survive apocalypses) and Mr Reliable, couch grass.
This as of next week will have 4 x gooseberry bushes, 1 x recurrent, 1x Blackcurrant, an apple tree, in addition to the three plum/gage trees.
I have decided to put weed fabric down and cover this with barkchips. Then I'll cut through to plant the herbs and bushes.
The large plum was sawn down, was old, too old. I couldn't afford the fees for a home, so on the fire it goes.