The Sussex Wildlife Trust (SWT) is a conservation charity which aims to protect natural life in Sussex. It was founded in 1961 and is one of 46 wildlife trusts across the UK and the Isle of Man and Alderney. As of 2024, it had 38,000 members and manages 2,000 hectares of land for nature. It is a registered charity and in the year to 31 March 2019 it had an income of £5.7 million and expenditure of £4 million, resulting in net income of £1.7 million.
Heathfield and Waldron is a civil parish within the Wealden District of East Sussex, England. Heathfield is surrounded by the High Weald Area of Outstanding Natural Beauty. The parish was formed on 1 April 1999 from "Heathfield" and "Waldron" parishes.
Weir Wood Reservoir is a 153.5-hectare (379-acre) biological Site of Special Scientific Interest west of Forest Row in East Sussex. It is in High Weald Area of Outstanding Natural Beauty and an area of 32.6 hectares is a Local Nature Reserve which is owned by Southern Water and managed by East Sussex County Council and Southern Water.
Ashburnham Park is a 109.9-hectare (272-acre) biological Site of Special Scientific Interest north-west of Hastings in East Sussex. It is a Nature Conservation Review site, Grade 2. The park is the garden of Ashburnham Place and it is listed on the Register of Historic Parks and Gardens of Special Historic Interest.
Bream Wood is a 7.8-hectare (19-acre) biological Site of Special Scientific Interest north of Crowborough in East Sussex.
High Woods is a 33.7-hectare (83-acre) biological Site of Special Scientific Interest on the northern outskirts of Bexhill-on-Sea in East Sussex. It is owned by Rother District Council and managed by Highwoods Preservation Society.
Maplehurst Wood is a 31.6-hectare (78-acre) biological Site of Special Scientific Interest on the northern outskirts of Hastings in East Sussex.
Plashett Park Wood is a 157.6-hectare (389-acre) biological Site of Special Scientific Interest between Lewes and Uckfield in East Sussex.
Leasam Heronry Wood is a 2.1-hectare (5.2-acre) biological Site of Special Scientific Interest north-west of Rye in East Sussex.
Rock Wood is a 10.4-hectare (26-acre) biological Site of Special Scientific Interest north of Uckfield in East Sussex.
Fore Wood is a 20.9-hectare (52-acre) biological Site of Special Scientific Interest north-west of Hastings in East Sussex. It is part of the Royal Society for the Protection of Birds nature reserve of the same name, and the land designated as Fore Wood SSSI is entirely owned by the Royal Society for the Protection of Birds.
Combe Haven is a 153-hectare (380-acre) biological Site of Special Scientific Interest between Hastings and Bexhill-on-Sea in East Sussex. An area of 18.5 acres is Filsham Reedbed Local Nature Reserve, which is managed by the Sussex Wildlife Trust
Herstmonceux Park is a 4.3-hectare (11-acre) biological Site of Special Scientific Interest south of Herstmonceux in East Sussex.
Marline Valley Woods is a 55.1-hectare (136-acre) biological Site of Special Scientific Interest on the western outskirts of Hastings in East Sussex. An area of 40.3 hectares is a Local Nature Reserve owned by Hastings Borough Council and managed by the Sussex Wildlife Trust.
Darwell Wood is a 37.5-hectare (93-acre) biological Site of Special Scientific Interest north-west of Battle in East Sussex.
Groton Wood is a 20.2-hectare (50-acre) biological Site of Special Scientific Interest north-east of Groton in Suffolk. It is owned and managed by the Suffolk Wildlife Trust.
Ambersham Common is a 141.6-hectare (350-acre) biological Site of Special Scientific Interest south-east of Midhurst in West Sussex. It is a Nature Conservation Review site, Grade 2.
East Dean Park Wood is a 17.8-hectare (44-acre) biological Site of Special Scientific Interest south of East Dean in West Sussex.
