They said on a statement issued today:
“Following the Prime Minister’s advice the National Trust’s Director-General Hilary McGrady said that our pay-for-entry sites including houses, cafés and shops, will close by this Friday 20 March.
We’ll work, where possible, to keep as many of our gardens and parklands open, free of charge, alongside coast and countryside, to encourage the nation to enjoy open space, while observing social distancing measures.
“While we will close our indoor areas to help fight the spread of coronavirus, we recognise that people are likely to need access to open space.”
You can learn more and read the full statement here and check out your local National Trust open spaces to visit.