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Description

* on The National Heritage List for England, Parks & Gardens

With the adjacent Canons Park, the grounds of North London Collegiate School are a fragment of the grand early C18th landscape of Canons laid out for the Duke and Duchess of Chandos. The estate is so-called after the Augustinian canons of St Bartholomew in Smithfield, who owned the Manor of Stanmore in 1086. The estate had various subsequent owners, notably William Hallett who rebuilt the house in 1760, and Sir Thomas Plumer, who may have sought Humphry Repton's advice on the landscape. The last private owner was Sir Arthur du Cros, for whom formal Arts & Crafts style gardens were laid out in 1910 by Charles Mallows, and were highly regarded. The estate was eventually broken up in the early C20th, the house and 10 acres of land purchased for the school in 1929. In addition to remnants of the C18th and C19th landscaping, the school grounds retain Mallows' formal gardens, particularly south-east of the main building, which is the core of Hallett's villa.

Practical Information

Previously known as Canons, Canons House
Site location Canons Drive, Canons Park, Edgware
Postcode HA8 7RJ
What3Words ///foods.other.grabs
Type of Site Institutional Grounds
Borough Harrow
Open to Public By appointment only
Opening Times private, has opened for London Open Gardens
Public Transport Tube: Canons Park, Stanmore (Jubilee), Edgware (Northern). Bus: 32, 79, 107, 113, 142, 186, 204, 221, 240, 251, 288, 292, 303, 305.
Research Updated 1 June 2007
Last Updated 18 October 2026

Full description

Site on The National Heritage List for England, Parks & Gardens, for Register Entry see https://www.historicengland.org.uk/listing/the-list. The Historic Buildings and Monuments Commission for England was established in 1984 and was commonly called English Heritage. In April 2015 it split into 2 separate entities, Historic England (HE), which continues to champion and protect the historic environment, and the English Heritage Trust, whose role is to look after the 400+ historic sites and monuments owned by the state. HE manages the National Heritage List for England (NHLE) that includes over 400,000 items ranging from prehistoric monuments to office blocks, battlefields and parks, which benefit from legal protection.

With Canons Park (q.v.) the grounds of North London Collegiate School are a fragment of a great C18th landscape garden. The estate of Canons, or Cannons as it was previously spelt, is so-called after the Augustinian canons of the Priory of St Bartholomew in Smithfield, who owned the Manor of Stanmore in 1086 and were gifted the land in 1330. Following the Dissolution of the Monasteries, the estate initially passed to Sir Hugh Losse, whose son Robert sold it in the early C17th to Sir Thomas Lake, Secretary of State (Chancellor of the Exchequer) to James I. Lake's great grand-daughter Mary married her cousin James Brydges in 1696 and the estate was part of her dowry. Brydges became MP for Hereford in 1698 and then Paymaster General to the Forces, a position he held until 1713, amassing a large fortune.

After Mary died in 1712, Brydges married Cassandra Willoughby, his first cousin; together they began to enlarge Canons, and their palace and grandiose gardens were laid out between 1713 and c.1720. In 1714 they moved here with their two sons and in October 1719 Brydges became 1st Duke of Chandos. Canons became a focus for fashionable society, with much cultural and social activity; Chandos became a patron of Georg Frideric Handel, who from 1717-20 was composer-in-residence at Canons, where he wrote The Chandos Anthems and Concerti Grossi, and 'Acis and Galatea' was first performed in the gardens. Garden designers associated with laying out of the grounds for the Duke and Duchess include George London, Richard Bradley, Tilleman Bobart and Alexander Blackwell and he is also said to have employed Dr Desaguiliers to design water features including canals, lakes and fountains. The spectacular gardens were admired by many of their contemporaries, including Daniel Defoe, but others, such as Alexander Pope, vilified them as the height of bad taste, identifying Chandos with the ridiculous Timon's Villa in his 'Epistle to Lord Burlington' (1731). Chandos lost part of his fortune in the South Sea Bubble disaster, but after Cassandra's death in 1735 he remarried a wealthy widow, Lady Lydia Davall. Chandos died in 1744, and the house was subsequently demolished after 1747, sold to pay off the 2nd Duke of Chandos's debts; the materials of the house were largely auctioned as architectural salvage.

The estate and remaining materials were acquired by cabinet-maker turned gentleman William Hallett who built another Canons House in 1760, later much enlarged. Hallett died in 1781, his heir following in 1785, whereupon the estate went through a number of owners. These included 'Captain' Dennis O'Kelly, an Irish racehorse breeder, and Sir Thomas Plumer, Master of the Rolls, for whom Humphry Repton is thought to have carried out alterations, as there are records that he was paid 30 guineas by Sir Thomas in 1816. There is a view of Canons Park by Repton dated 1805. The estate was later owned by Dr William Begg, and finally by Sir Arthur Phillip du Cros, tyre magnate and founder of the Dunlop Rubber Company, who acquired the estate in c.1896, and it was eventually broken up from the early C20th. Sir Arthur commissioned architect Charles Mallows (1864-1915) to alter the house and re-design formal gardens around it, which date from c.1910. By 1905 Sir Arthur had sold off the northern and southern part of the estate, largely for housing development but also for a golf course.

After WWI he put the house up for sale, which with 10 acres of grounds was finally purchased by the North London Collegiate School in 1929 for £17,500, with the assistance of Middlesex County Council. Part of the remainder of the estate was acquired by Harrow Council and became the public park, although land to the east and west was also sold off for building. This included 85 acres sold to George Cross in 1926, whose Canons Park Estate retained many mature trees as well as two lakes as the setting for high-class housing.

North London Collegiate School had been founded in 1850 in Camden Town in North London by Miss Frances Mary Buss, who was its head mistress for 44 years and a great believer in education for girls. It came to be regarded as a model school and catered for 'daughters of gentlemen and respectable tradesmen'. Originally run as a private school from the family home, it gained public status in 1870 and, having outgrown its first home, moved to Camden Road, then to Sandall Road in 1879 where it was run much like a boys' public school. It became a direct grant school from 1944 - 1976, and is now an independent school with charitable status. Although it purchased the property in 1929, the school eventually settled at Canons in 1939, additional buildings having been designed by Sir Albert Richardson, who also designed the drawing school of 1957.

Within the school grounds are the core of William Hallett's villa, the lake now with Rhododendron walks around it, and the C18th layout is still discernible in the grounds to the east. The approach to the school from Edgware High Street formed the main drive in the C18th and two gate piers remain on the main road, as does the avenue of Wellingtonia, and The Basin, now surrounded by housing. There are remnants of the C19th landscaping including mature trees, such as Cedar of Lebanon and horse chestnut trees, although the lime tree walk to the Lake was probably replanted in the early-mid C20th. The pond on the north west of the main school building is another remnant of the C18th layout, the small late C20th summerhouse on the site of an earlier garden building. Charles Mallows' elaborate formal terraces and gardens of c.1910 remain largely intact to the south and east of the main building, although his garden to the north was later built over for new school buildings. The south-east front of the main building looks onto a symmetrical, rectangular Arts and Crafts style garden with balustrading, pergola, crazy paving and a square pond. Central steps from this garden now lead to late C20th tennis courts beyond which is a circular temple designed by Mallows. The balustraded garden continues around the north east of the main building and parallel and below this is a long herbaceous border and walkway running the full length of the house, beyond which are playing fields.

Further Information

Grid Reference TQ182921
Site Ownership North London Collegiate School
Site Management North London Collegiate School
Dates C18th; early C20th
Designers Alexander Blackwell, Richard Bradley, Tilleman Bobart; Humphry Repton; Charles Mallows
Listed Structures LBII: C18h end block to south-east of School, North London Collegiate School, balustrades, walls & terraces with temple to south/east of School
On National Heritage List for England (NHLE), Parks & Gardens Yes (with Canons Park)
NHLE grade Grade II
Registered common or village green on Commons Registration Act 1965 No
Protected under London Squares Preservation Act 1931 No
Local Authority Harrow
In Conservation Area Yes
Conservation Area Name Canons Park Estate
Tree Preservation Order No
Nature Conservation Area Yes - part
Green Belt No
Metropolitan Open Land Yes
Special Policy Area No

Please note the Inventory and its content are provided for your general information only and are subject to change. It is your responsibility to check the accuracy.

Nearby parks and gardens

  • Harrow
  • 0.1 miles away
* on The National Heritage List for England, Parks & Gardens

Canons Park is a fragment of the great C18th landscape garden laid out for the Duke and Duchess of Chandos. The estate is so-called after the Augustinian canons of St Bartholomew in Smithfield, who owned the Manor of Stanmore in 1086. The estate had various subsequent owners, notably William Hallett who rebuilt the house in 1760, and Sir Thomas Plummer, who may have sought Humphry Repton's advice on the landscape. The last private owner was Sir Arthur du Cros, for whom formal Arts & Crafts style gardens were laid out by Charles Mallows. The estate was eventually broken up in the early C20th, the house and 10 acres of land purchased for North London Collegiate School in 1929. Part of the remainder of the estate was acquired by Harrow Council and became the public park, although land to the east and west was also sold off for building. 85 acres were sold for the Canons Park Estate, which retained features of the earlier landscape, mature trees and two lakes. In the late 1930s the George V Memorial Garden was laid out within the old walled kitchen garden.
Canons Park, View along Camber Avenue towards North London Collegiate School, autumn 2007. Photo Sharon Graham
  • Harrow
  • 0.5 miles away
In Roman times tile-making was carried out in Stanmore and there are Roman tiles in the fabric of St Lawrence Whitchurch. The C12th church was rebuilt in 1715 by John James for the Duke of Chandos, owner of the Canons estate, although the early C16th west tower remains. It has a fine early C18th baroque interior. Handel was appointed music master at Canons in 1718 and played the church organ. The rustic lych-gate at the entrance of the churchyard was erected to the memory of Dr Findlater and there are some good chest tombs and monuments particularly near the church; the churchyard to the north is open with a few scattered trees.
  • Barnet
  • 0.5 miles away
Stonegrove Park opened in May 1934 and is a small irregularly shaped public park between the main road and residential streets. Development in the area took place during the 1920s although by the early C19th some houses had been built along Stone Grove, including Stone Grove House. The park has a circular boating pond, now drained and weed-filled, in the middle of a grassy area with various deciduous trees. On the southern side are tennis courts, small formal beds and two playgrounds. There is a perimeter path with several benches, having cast-iron supports and arm-rests in the shape of lion heads dated c.1934. Adjoining the park is the rear elevation of Days Almshouses with a grass terrace and evergreen planting.
Stonegrove Park, October 2000. Photo: S Williams