The common is home to at least 40 species of butterfly, including the protected chalkhill blue and dark green fritillary.
The site contains a disused Victorian-era chalk quarry, which is now a haven for unique biodiversity.
Large areas of the common consist of ancient semi-natural woodland, some of which dates back to before 1600.
The site’s grazing program uses cattle to prevent invasive scrub from overgrowing the rare chalk grassland habitats.
Riddlesdown forms part of the wider Coulsdon Commons, a collection of four distinct green spaces managed by the City of London Corporation.
Riddlesdown Common is a 148-acre area of open chalk grassland, scrub, and woodland located within the North Downs landscape. It is managed by the City of London Corporation and holds Site of Special Scientific Interest (SSSI) status due to its rare flora and fauna. The site features an extensive network of footpaths and bridleways suitable for walking, cycling, and horse riding. Historically, the land was once part of the estate of the Lords of the Manor of Watendone. The common provides panoramic views over the Kenley Valley and the surrounding Surrey countryside. Visitors can observe distinct habitats, including ancient yew woodland and juniper scrub. It serves as an important site for butterflies, with species such as the chalkhill blue frequently recorded. Grazing cattle are used periodically as part of the site’s traditional land management program to maintain the chalk grassland biodiversity.
The viewpoint overlooking the Kenley valley, particularly during the golden hour when light hits the chalk slopes.
Wear sturdy, waterproof footwear as the chalk paths can become slippery and muddy during damp weather.
Check for ticks after walking through long grass, especially during the warmer summer months.
Bring binoculars for birdwatching, as the variety of scrub habitats attracts a wide range of woodland and grassland birds.
Do not attempt to pet or feed the grazing cattle, as they are part of a conservation program and can be unpredictable.
Keep dogs under close control, especially when livestock are present; leave no trace and take all litter home.
