Return of the Wilderness to the UK?

[Sunna]

post collapse , heres the biggie and with no mass die off we will need every inch of land for carb rich food like spuds ,sweeds ect.
mass die off 500 years , some still think that it will be like some old 40/50s robin hood movie where you can escape into the woods , full of game and fresh water and live under the branches of a tree.