Not all National Trust properties are open yet, and those that are require pre-booking via their website, no later than 15:00 on the day prior to visit.
If you, or any of your party have a new persistant cough, or develop a fever of 38C, we would instead advise you to use the NHS's dedicated website for professional advice.
The Sharpenhoe group of properties comprises four adjacent countryside areas to the north of Luton. These are (from west to east) Sundon Hills, Moleskin and Markham Hills, Sharpenhoe Clappers and Smithcombe Hills.
Sundon Hills has a lovely picnic area, which is located immediately adjacent to the car park; benches are provided or bring a blanket and sit on the grass.
Reputedly haunted, Sharpenhoe Clappers is a classic chalk escarpment and part of the Chilterns Area of Outstanding Natural Beauty. It is crowned with traces of an Iron Age hill-fort and an impressive beech wood.
If you have time, seek out the old chalk quarry and savour the views along the ridge of hills. In summer you can walk through the mass of flowers and butterflies in the quarry itself.