| Site of Special Scientific Interest | |
|   | |
| Location | Surrey | 
|---|---|
| Grid reference | SU 987 557 [1] | 
| Interest | Biological | 
| Area | 39.0 hectares (96 acres) [1] | 
| Notification | 1993 [1] | 
| Location map | Magic Map | 
Smart's and Prey Heaths is a 39-hectare (96-acre) biological Site of Special Scientific Interest south-west of Woking in Surrey. [1] [2]
These mainly damp heaths are dominated by ling, cross-leaved heath and purple moor-grass. Other plants include creeping willow, dwarf gorse, oblong-leaved sundew, deergrass and round-leaved sundew. [3]
The heaths are crossed by footpaths.