- Gardencity
- All gardens
- Grade I
Grade I parks and gardens
Grade I sites are of exceptional interest — around one in ten registered landscapes, from Blenheim and Stowe to Studley Royal.
- Sites
- 122
- Counties
- 37
- Most in
- Greater London (18)
122 sites
| Site | Grade | County | District | Area, ha | Registered | Owner or operator |
|---|---|---|---|---|---|---|
 Abbotsbury Subtropical Gardens | I | Dorset | Abbotsbury | 15 | 1986 | — |
 Albury Park | I | Surrey | Guildford | — | 1984 | — |
 Alton Towers | I | Staffordshire | Staffordshire Moorlands | — | 1984 | Alton Towers, Charles Talbot, 15th Earl of Shrewsbury and 15th Earl of Waterford, John Talbot, 16th Earl of Shrewsbury |
 Athelhampton Hall | I | Dorset | Athelhampton and Puddletown | — | 1986 | — |
 Audley End House | I | Essex | Uttlesford | — | 1987 | English Heritage |
| Belton House Gardens | I | Lincolnshire | South Kesteven | 506 | 1985 | — |
 Bicton House | I | Devon | East Devon | — | 1987 | — |
 Bicton Park botanical garden | I | Devon | East Devon | 153 | 1987 | — |
 Biddulph Grange Country Park | I | Staffordshire | Staffordshire Moorlands | 30 | — | — |
 Birkenhead Park | I | Merseyside | Wirral | 58 | 1986 | — |
 Blenheim Palace | I | Oxfordshire | West Oxfordshire | — | 1984 | Duke of Marlborough |
 Boughton House | I | Northamptonshire | North Northamptonshire | — | 1984 | — |
| Bowood Gardens | I | Wiltshire | Derry Hill & Studley | 549 | 1987 | — |
 Bramshill House | I | Hampshire | Hart | — | 1984 | — |
 Brocklesby Hall | I | Lincolnshire | West Lindsey | 1,561 | 1985 | — |
 Brompton Cemetery | I | Greater London | Royal Borough of Kensington and Chelsea | 16 | 1987 | The Royal Parks |
 Brookwood Cemetery | I | Surrey | Woking | 146 | 1993 | London Necropolis Company |
 Bunhill Fields | I | Greater London | London Borough of Islington | 2 | 2010 | — |
 Bushy Park | I | Greater London | London Borough of Richmond upon Thames | 445 | — | — |
 Cambridge American Cemetery and Memorial | I | Cambridgeshire | Cambridge | 12 | 2002 | American Battle Monuments Commission |
 Cannock Chase German Military Cemetery | I | Staffordshire | Stafford | — | 2002 | German War Graves Commission |
 Castle Ashby House | I | Northamptonshire | West Northamptonshire | — | 1984 | — |
 Castle Hill, Filleigh | I | Devon | North Devon | 1,679 | 1987 | — |
| Chatsworth House Estate | I | Derbyshire | Derbyshire Dales | 766 | 1984 | — |
 Chelsea Physic Garden | I | Greater London | Royal Borough of Kensington and Chelsea | 1 | 1987 | — |
 Chiswick House | I | Greater London | London Borough of Hounslow | 26 | 1987 | English Heritage |
 Christ Church | I | Oxfordshire | Oxford | — | 1984 | — |
 Cirencester Park | I | Gloucestershire | Cotswold | — | 1986 | Benjamin Bathurst, Allen Bathurst, 1st Earl Bathurst, Allen Bathurst, 9th Earl Bathurst |
 City of London Cemetery and Crematorium | I | Greater London | London Borough of Newham | 66 | 1987 | City of London Corporation |
 Claremont Landscape Garden | I | Surrey | Elmbridge | — | 1984 | National Trust |
 Cliveden | I | Buckinghamshire | Taplow | — | 1987 | National Trust |
 Clumber Park | I | Nottinghamshire | Bassetlaw | 1,542 | 1986 | National Trust |
 Croome Park | I | Worcestershire | Malvern Hills | 458 | 1986 | National Trust |
 Drayton House | I | Northamptonshire | North Northamptonshire | — | 1984 | — |
| Endsleigh Gardens | I | Devon | West Devon | — | 1987 | — |
 Farnborough Hall | I | Warwickshire | Stratford-on-Avon | — | 1986 | — |
 Frogmore Estate | I | Berkshire | Windsor and Maidenhead | 16 | 1987 | — |
 Gardens of Rousham House | I | Oxfordshire | West Oxfordshire | — | 1984 | — |
 Gibside | I | Tyne and Wear | Gateshead | 204 | 1985 | Bowes-Lyon |
 Goodwood House | I | West Sussex | Chichester | — | 1984 | Charles Lennox, 1st Duke of Richmond |
 Great Dixter | I | East Sussex | Rother | 3 | 1987 | — |
 Greenwich Park | I | Greater London | Royal Borough of Greenwich | 74 | 1987 | The Royal Parks |
 Hackfall | I | North Yorkshire | Harrogate | 40 | 1984 | The Woodland Trust |
| Hackwood Park | I | Hampshire | Basingstoke and Deane | — | 1984 | — |
 Hagley Park | I | Worcestershire | — | 124 | 1986 | — |
 Hampton Court Park | I | Greater London | London Borough of Richmond upon Thames | 89 | 1987 | — |
 Hardwick Hall | I | Derbyshire | Bolsover | 300 | 1984 | Bess of Hardwick, National Trust |
 Harewood House | I | West Yorkshire | Leeds | 610 | 1984 | Edwin Lascelles, 1st Baron Harewood |
 Hatfield House | I | Hertfordshire | Welwyn Hatfield | — | 1987 | — |
 Hawkstone Park | I | Shropshire | Weston-under-Redcastle | — | 1986 | — |
 Helmingham Hall | I | Suffolk | Mid Suffolk | 155 | 1984 | — |
 Hestercombe Gardens | I | Somerset | West Monkton | 120 | 1984 | — |
 Hever Castle | I | Kent | Sevenoaks | — | 1986 | — |
 Highclere Castle | I | Hampshire | Basingstoke and Deane | 472 | 1984 | George Herbert, 8th Earl of Carnarvon |
 Highgate Cemetery | I | Greater London | London Borough of Camden | 15 | 1987 | — |
 Holdenby House | I | Northamptonshire | West Northamptonshire | 65 | 1984 | — |
| Holkham Park | I | Norfolk | North Norfolk | — | 1987 | — |
 Home Park | I | Berkshire | Windsor and Maidenhead | 265 | 1999 | Crown Estate |
| Houghton Hall | I | Norfolk | King's Lynn and West Norfolk | — | 1987 | — |
 Hyde Park | I | Greater London | City of Westminster | 138 | 1987 | the Crown |
 Iford Manor | I | Somerset | Bath and North East Somerset | 19 | 1987 | — |
 Kedleston Hall gardens | I | Derbyshire | Amber Valley | 400 | 1984 | — |
 Kensal Green Cemetery | I | Greater London | Royal Borough of Kensington and Chelsea | 29 | 1987 | — |
 Kensington Gardens | I | Greater London | City of Westminster | 116 | 1987 | — |
 Kew Gardens | I | Greater London | London Borough of Richmond upon Thames | 272 | 1987 | Royal Botanic Gardens, Kew |
 Knole House | I | Kent | Sevenoaks | — | 1986 | Thomas Bourchier, Thomas Sackville, 1st Earl of Dorset |
 Leonardslee | I | West Sussex | Horsham | 95 | 1984 | — |
 Lodge Park | I | Gloucestershire | Cotswold | 153 | 1986 | — |
 London Road Cemetery | I | West Midlands | Coventry | 8 | 1986 | — |
 Longleat | I | Wiltshire | Horningsham | — | 1987 | Marquess of Bath |
 Lyveden New Bield | I | Northamptonshire | North Northamptonshire | — | 1984 | — |
 Magdalen College | I | Oxfordshire | Oxford | — | 1984 | — |
 Melbourne Hall | I | Derbyshire | South Derbyshire | 21 | 1984 | — |
 Mells Manor | I | Somerset | Mells | 2 | 1984 | — |
 Montacute House | I | Somerset | Montacute | 119 | 1984 | National Trust, Edward Phelips, Robert Phelips |
 Mount Edgcumbe Country Park | I | Cornwall | Maker-with-Rame | 227 | 1987 | — |
 Munstead Wood | I | Surrey | Waverley | — | 1984 | National Trust |
 New College | I | Oxfordshire | Oxford | — | 1984 | — |
 Norris Castle | I | Isle of Wight | East Cowes | — | 1987 | — |
| Nuneham Courtenay | I | Oxfordshire | South Oxfordshire | 471 | 1984 | — |
 Painshill | I | Surrey | Elmbridge | 87 | 1984 | Robert Hibbert |
 Penshurst Place | I | Kent | Sevenoaks | 189 | 1986 | Philip Sidney, 2nd Viscount De L’Isle |
 Petworth House | I | West Sussex | Chichester | — | 1984 | National Trust |
 Port Eliot | I | Cornwall | St Germans | — | 1987 | — |
 Prior Park Landscape Garden | I | Somerset | Bath and North East Somerset | 23 | 1987 | National Trust |
 Regent's Park | I | Greater London | City of Westminster | 166 | 1987 | — |
 Richmond Park | I | Greater London | London Borough of Richmond upon Thames | 950 | — | — |
 Rievaulx Terrace | I | North Yorkshire | Rievaulx | 24 | 1984 | National Trust |
| Rousham House and Gardens | I | Oxfordshire | West Oxfordshire | — | 1984 | — |
 Royal Victoria Park | I | Somerset | Bath and North East Somerset | 22 | 1992 | Bath and North East Somerset Council |
| Savill Garden and Valley Gardens | I | Surrey | Runnymede | 101 | 1984 | — |
 Scotney Castle | I | Kent | Tunbridge Wells | — | 1986 | National Trust |
 Sezincote House | I | Gloucestershire | Cotswold | — | 1986 | James Dugdale |
 Sheffield Park Garden | I | East Sussex | Wealden | — | 1987 | National Trust |
 Shotover Park | I | Oxfordshire | South Oxfordshire | — | 1984 | — |
 Shrubland Hall | I | Suffolk | Mid Suffolk | — | 1984 | — |
 Shugborough Hall | I | Staffordshire | Stafford | 269 | 1984 | National Trust |
 Sissinghurst Castle Garden | I | Kent | Tunbridge Wells | 22 | 1986 | National Trust |
 Sledmere House | I | East Riding of Yorkshire | Sledmere | — | 1984 | — |
 St Catherine's College | I | Oxfordshire | Oxford | — | 1998 | — |
 St James Cemetery | I | Merseyside | Liverpool | 3 | 2002 | — |
 St James's Park | I | Greater London | City of Westminster | 37 | 1987 | The Royal Parks |
 St Paul's Walden Bury | I | Hertfordshire | North Hertfordshire | — | 1987 | — |
 Stoke Poges Memorial Gardens | I | Buckinghamshire | Stoke Poges | 9 | 1995 | — |
 Stourhead | I | Wiltshire | Stourton with Gasper | — | 1987 | National Trust |
 Stowe Park and Garden | I | Buckinghamshire | Biddlesden | 820 | 1987 | National Trust |
 Studley Royal Park | I | North Yorkshire | Aldfield | 318 | 1984 | National Trust |
 Syon Park | I | Greater London | London Borough of Hounslow | 56 | 1987 | — |
 Thoresby Hall | I | Nottinghamshire | Newark and Sherwood | — | 1986 | — |
 Trafalgar Square | I | Greater London | City of Westminster | 1 | 1996 | Greater London Authority |
 Tresco Abbey Gardens | I | Cornwall | Isles of Scilly | 37 | 1987 | — |
 University of Oxford Botanic Garden | I | Oxfordshire | Oxford | 3 | 1984 | University of Oxford |
 Waddesdon Manor | I | Buckinghamshire | Waddesdon | — | 1987 | National Trust, James Armand de Rothschild, Ferdinand James von Rothschild, Dorothy de Rothschild, Jacob Rothschild, 4th Baron Rothschild, Edmond James de Rothschild |
 Warwick Castle | I | Warwickshire | Warwick | — | 1986 | William the Conqueror, The Tussauds Group, Prestbury Investment Holdings |
| Wentworth Castle Gardens | I | South Yorkshire | Barnsley | — | 1984 | — |
| West Wycombe Park | I | Buckinghamshire | West Wycombe | — | 1987 | — |
 Westonbirt Arboretum | I | Wiltshire | Easton Grey | 496 | 1986 | Robert Stayner Holford, Sir George Holford |
| Wilton House gardens | I | Wiltshire | Wilton | — | 1987 | — |
 Wimpole Estate | I | Cambridgeshire | South Cambridgeshire | 364 | 1985 | National Trust |
 Windsor Great Park | I | Berkshire | — | 1,942 | 1987 | Crown Estate |
 Woburn Abbey | I | Bedfordshire | Central Bedfordshire | 955 | 1986 | Duke of Bedford |
 Wrest Park | I | Bedfordshire | Central Bedfordshire | — | 1986 | English Heritage |