The more rewilding the less space to grow food. Probably why they are pushing it.
Who are 'they' for starters?
UK agricultural land use = 17 million hectares or 70% of the total area of the UK.
Total croppable land = 6.1 million hectares or 1/3rd of the area of the UK.
Total area of the UK that is built upon = 5.9%.
Fear not nojob, the UK is ok for domestic re-wilding projects, lol.