Letcombe Brook is a 7.5-mile (12 km) stream in the Vale of White Horse in Oxfordshire, England. It rises at the foot of the Berkshire Downs in Letcombe Bassett and flows through Letcombe Regis, Wantage, Grove and East Hanney to join Childrey Brook, which is a tributary of the River Ock, which is a tributary of the River Thames.
Bacombe and Coombe Hills is a 76.4-hectare (189-acre) biological Site of Special Scientific Interest in Upper Bacombe in Buckinghamshire. Bacombe Hill was formerly owned by Buckinghamshire County Council, which transferred it to Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust in 2014. Coombe Hill is owned by the National Trust.
Gomm Valley is a 4-hectare (9.9-acre) biological Site of Special Scientific Interest in Micklefield, a district of High Wycombe in Buckinghamshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust and is part of the Chilterns Area of Outstanding Natural Beauty. The local planning authority is Wycombe District 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 (15-acre) 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.
College Lake is a 65 hectare nature reserve in a former chalk quarry in Pitstone in the Aylesbury Vale district of Buckinghamshire. It is one of the flagship reserves of the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust, and it has an information centre, education facilities, a café, toilets and a shop. It is in the Chilterns Area of Outstanding Natural Beauty. The area east of the lake is a geological Site of Special Scientific Interest called Pitstone Quarry.
Aston Clinton Ragpits is a 2.9-hectare (7.2-acre) biological Site of Special Scientific Interest in Aston Clinton in Buckinghamshire. It is a former chalk quarry, which is now a nature reserve managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. It is in the Chilterns Area of Outstanding Natural Beauty.
Dancersend is an 81.3-hectare (201-acre) 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.
Weston Turville Reservoir is a 19 hectare biological Site of Special Scientific Interest south of Weston Turville in Buckinghamshire. It is owned by the Canal & River Trust, and the open water is leased to sailing and fishing clubs while the surrounding land is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. The site is in the Chilterns Area of Outstanding Natural Beauty.
Letcombe Valley is a 7.5-hectare (19-acre) nature reserve south of Letcombe Regis in Oxfordshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust (BBOWT), with the assistance of the Friends of Letcombe Valley.
Yoesden, often known as Yoesden Bank, is a 13-hectare (32-acre) nature reserve in Bledlow Ridge in Buckinghamshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. It is in the Chilterns Area of Outstanding Natural Beauty.
Frilford Heath, Ponds and Fens is a 108.8-hectare (269-acre) biological Site of Special Scientific Interest in Frilford, west of Abingdon in Oxfordshire. An area of 3 hectares, separate from the main site is Hitchcopse Pit, a nature reserve managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
Loddon Nature Reserve is a 14-hectare (35-acre) nature reserve on the edge of the village of Twyford in Berkshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
Dry Sandford Pit is a 4.2-hectare (10-acre) biological and geological Site of Special Scientific Interest north-west of Abingdon-on-Thames in Oxfordshire. It is a Geological Conservation Review site and it is managed as a nature reserve by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
Oakley Hill is a 13-hectare (32-acre) nature reserve south of Chinnor in Oxfordshire, England. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
CS Lewis Nature Reserve is a 3-hectare (7.4-acre) nature reserve in Risinghurst, a suburb of Oxford in Oxfordshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
Hitchcopse Pit is a 3-hectare (7.4-acre) nature reserve north-west of Abingdon-on-Thames in Oxfordshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. It is part of Frilford Heath, Ponds and Fens, which is a Site of Special Scientific Interest.
Warren Bank is a 3.1-hectare (7.7-acre) biological Site of Special Scientific Interest south-east of Wallingford in Oxfordshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.
