Bix Bottom is a 102.3-hectare (253-acre) biological Site of Special Scientific Interest north-west of Henley-on-Thames in Oxfordshire. It is owned and managed as Warburg Nature Reserve by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
Finemere Wood is a 45.7-hectare (113-acre) biological Site of Special Scientific Interest near Quainton in Buckinghamshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust and the planning authorities are Aylesbury Vale District Council and Buckinghamshire County Council.
Grangelands and Pulpit Hill is a 25.5-hectare (63-acre) biological Site of Special Scientific Interest in Cadsden in Buckinghamshire. It lies within the Chilterns Area of Outstanding Natural Beauty, and the planning authorities are Wycombe District Council and Buckinghamshire County Council.
Hollowhill and Pullingshill Woods is a 23-hectare biological Site of Special Scientific Interest near Marlow in Buckinghamshire. It is in the Chilterns Area of Outstanding Natural Beauty, and the Chilterns Beechwoods Special Area of Conservation. The local planning authorities are Wycombe District Council and Buckinghamshire County Council. Pullingshill Wood is owned by the Woodland Trust, and Hollowhill Wood was formerly owned by Buckinghamshire County Council, but was transferred to the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. Since November 2015 the 7.8-hectare site has been managed by the Trust as "Hog and Hollowhill Woods".
Homefield Wood is a 6.1 hectare Site of Special Scientific Interest in Hambleden in Buckinghamshire. It is owned by the Forestry Commission, and managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. It is part of the Chilterns Area of Outstanding Natural Beauty.
Dancersend is an 81.3 hectare Site of Special Scientific Interest (SSSI) south of Aston Clinton in Buckinghamshire. Part of the site is managed by the Forestry Commission and part by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust (BBOWT). The BBOWT's 47 hectare nature reserve, called Dancersend with Pavis Woods, extends into fields west of the SSSI. It is in the Chilterns Areas of Outstanding Natural Beauty.
Millfield Wood is a 9.5-hectare (23-acre) biological Site of Special Scientific Interest north of High Wycombe in Buckinghamshire. It is owned and managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust, and it is in the Chilterns Areas of Outstanding Natural Beauty.
Swain's Wood is a 16.2-hectare (40-acre) biological Site of Special Scientific Interest west of Turville in Buckinghamshire. It is in the Chilterns Area of Outstanding Natural Beauty, and is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
Aston Rowant Woods is a 209.7-hectare (518-acre) biological Site of Special Scientific Interest near Aston Rowant in Oxfordshire and Buckinghamshire. Part of it is in Aston Rowant National Nature Reserve, and a large part is in the Chiltern Beechwoods Special Area of Conservation. The site is also in the Chilterns Area of Outstanding Natural Beauty.
Rushbeds Wood is a 56-hectare (140-acre) nature reserve near Wotton Underwood in Buckinghamshire, managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust (BBOWT). It is a surviving fragment of the ancient Bernwood Forest. The reserve is part of Rushbeds Wood and Railway Cutting, an 80.2-hectare (198-acre) biological Site of Special Scientific Interest. This includes a section of the Chiltern Main Line railway cutting, which runs along the north-east side of the BBOWT reserve.
Highlands Farm Pit is a 0.6-hectare (1.5-acre) geological Site of Special Scientific Interest in Henley-on-Thames in Oxfordshire. It is a Geological Conservation Review site.
Wildmoor Heath is a 91-hectare (220-acre) nature reserve south of Crowthorne in Berkshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. The reserve is part of two Sites of Special Scientific Interest: Wildmoor Heath itself is part of Sandhurst to Owlsmoor Bogs and Heaths and a separate area called Broadmoor Bottom is part of Broadmoor to Bagshot Woods and Heaths.
Harpsden Wood is a 29.4-hectare (73-acre) biological Site of Special Scientific Interest south of Henley-on-Thames in Oxfordshire. It is owned by the Woodland Trust and is open to the public.
Stanton Great Wood is a 58.2-hectare (144-acre) biological Site of Special Scientific Interest north-east of Oxford in Oxfordshire.
Bear, Oveys and Great Bottom Woods is a 64.1-hectare (158-acre) biological Site of Special Scientific Interest west of Henley-on-Thames in Oxfordshire.
Berrick Trench is a 2.1-hectare (5.2-acre) biological Site of Special Scientific Interest north of Nettlebed in Oxfordshire.
Little Wittenham SSSI is a 68.9-hectare (170-acre) biological Site of Special Scientific Interest north-east of Didcot in Oxfordshire. It is also a Special Area of Conservation.
Pishill Woods is a 42.8-hectare (106-acre) biological Site of Special Scientific Interest north of Nettlebed in Oxfordshire.
Bould Wood is a 58.2-hectare (144-acre) biological Site of Special Scientific Interest north of Shipton-under-Wychwood in Oxfordshire. An area of 23 hectares is Foxholes nature reserve, which is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
