The horticultural charity’s showpiece garden in Surrey is setting aside an space to test human waste fertiliser

For more than 200 years, gardeners at the Royal Horticultural Society (RHS) have been reaping the benefits of using compost and manure in their flowerbeds.

But until now, they have never had the satisfaction of using compost created from their own human waste.

Legal action has begun to remove the tenants after the 80-acre site was sold to be turned into a healing retreat

Lunch around the huge sycamore and oak table in the farmhouse kitchen of the off-grid Brithdir Mawr community in the Preseli mountains of west Wales is a warm, gentle affair.

Members of the housing co-operative share soup made from leeks and potatoes grown in the gardens, served with crumbly goat’s cheese from its own herd, all washed down with mugs of mountain spring water.