W
- Waddens Brook, Noose Lane – Walsall
- Wainbody Wood & Stivichall Common, Kenilworth Road Spinney
- Wains & Church Hill (Poets Walk)
- Walborough Common
- Walbottle Brickworks
- Wallsend Dene
- Wallsend Swallow Pond and Plantation
- Walnut Tree Field
- Wandle Meadow Nature Park
- Wandle Valley Wetland
- Wansbeck Riverside Park
- Walters Meadow, Great Cornard (Proposal)
- Wapley Bushes
- Warndon Woodlands
- Warnham
- Warren Nature Reserve
- Warren Vale
- Warren's Hall Country Park
- Warton Crag – Lancaster
- Warton Crag Quarry – Lancashire
- Warwickshire Moor – Tamworth
- Waseley Hills Country Park
- Watercress Wildlife Site
- Waterford Heath
- Watermead Country Park - Leicestershire
- Water's Edge Country Park – North Lincolnshire
- Watford Lodge – Derbyshire
- Watlington Chalk Pit
- Weald Common Flood Meadow
- Wealdon Edge Hangers
- Weelsby Woods Park – North East Lincolnshire
- Weirwood Reservoir
- Weirfield Riverside
- Welches Meadow
- Welcombe Hills & Clopton Park
- Wellington Basins
- Welsh Harp
- Welsh Wood
- Wensum Local Nature Reserve (Mile Cross Marsh and Sycamore Crescent)
- Wessington Green – North East Derbyshire
- West Beach, Climping
- West End Common
- Westbere Copse
- West Haigh Wood
- West Hayling
- West Moors Woodland
- West of the River Alver
- West Park, Uckfield
- West Park Meadows – Derby
- Western Heights
- Weston Woods Local Nature Reserve, Somerset
- Westport Lake – Stole-on-Trent
- Wharncliffe Heath – Sheffield
- Wheata Woods – Sheffield
- Wheathampstead
- Whet Mead
- Whinless Down
- Whisby Nature Park – North Kesteven, Lincs
- Whitbarrow Scar – Lake District National Park Authority
- Whitburn Point
- Whitby Park – Cheshire West and Chester
- White Rose Lane
- Whitecliff Wood – Redcar and Cleveland
- Whitegrove Copse
- Whitehall Meadows
- Whitehawk/Race Hill
- Whiteleaf Hill
- Whitfield Valley
- Whitlingham Marsh, Whitlingham
- Whitmoor & Rickford Commons
- Whitnash Brook
- Wick Golden Valley
- Widewater Lagoon
- Wigan Flashes - Wigan
- Wigg Island
- Wild Park/Hollingbury
- Wilderness Island
- Willenhall Wood – Coventry
- Willington North Dene – Wear Valley, Co Durham
- Willoughby Branch Line – Lincolnshire
- Willsbridge Valley
- Wilwell Cutting
- Windy Nook Nature Park
- Wingate Quarry – Co Durham
- Withdean and Westdene Woodlands
- Withnell Fold – Lancashire
- Withnell – Chorley, Lancashire
- Wiveton Down
- Wom Brook – South Staffordshire
- Woodbank Park - Stockport
- Woodhouse Washlands – Sheffield
- Woodland Wood Valley
- Woodston Ponds
- Woolley Wood – Sheffield
- Worcester Lane, Pedmore
- Wormwood Scrubs
- Worsborough Country Park
- Worsley Woods – Salford, Gtr Manchester
- Wrabness
- Wren's Nest – Dudley
- Wright's Wood - Stockport
- Wyken Slough – Coventry
- Wylam Haughs
- Wyrley Branch – South Staffordshire
Read more about this topic: List Of Local Nature Reserves In England