Description
Holy Trinity Church was built in 1824-28 to the designs of Sir John Soane, one of his three churches for the Church Commissioners, and the most expensive at £24,798. A stone building with a slate roof, the distinctive classical front to the south faces onto Marylebone Road. The chancel was remodelled in 1878 by G Somers Clarke. The church became redundant in 1956 and was used as offices for Society for the Promotion of Christian Knowledge until 2005, its conversion carried out by Handisyde and Taylor. It has now been converted into an event space, One Marylebone, which opened in 2007. The surrounding churchyard, which was once railed, has a number of mature trees and has been re-landscaped as a garden.
Practical Information
| Previously known as | One Marylebone |
|---|---|
| Site location | 1, Marylebone Road/Osnaburgh Terrace/Albany Street |
| Postcode | NW1 |
| What3Words | ///slick.plates.venues |
| Type of Site | Churchyard |
| Borough | Westminster |
| Open to Public | Yes |
| Opening Times | Churchyard area unrestricted. Church open for events |
| Events | Various events |
| Public Transport | Tube: Great Portland Street (Metropolitan, Hammersmith & City, Circle). Bus: 18, 27, 30, C2, 88 |
| Research Updated | 1 September 2011 |
| Last Updated | 18 October 2026 |
Further Information
| Grid Reference | TQ288822 |
|---|---|
| Site Ownership | One Marylebone |
| Site Management | One Marylebone |
| Dates | 1824-28 |
| Designers | Sir John Soane |
| Listed Structures | LBI: Holy Trinity Church |
| On National Heritage List for England (NHLE), Parks & Gardens | No |
| Registered common or village green on Commons Registration Act 1965 | No |
| Protected under London Squares Preservation Act 1931 | No |
| Local Authority | Westminster |
| In Conservation Area | Yes |
| Conservation Area Name | Regent's Park |
| Tree Preservation Order | To be checked |
| Nature Conservation Area | No |
| Green Belt | No |
| Metropolitan Open Land | No |
| 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
The Royal College of Physicians of London was founded in 1518; the present college dates from 1964, extended in 1996. Although there are some remnants from 1960s planting, the medicinal garden has been extensively replanted since 2005. It contains over 1000 different plants, arranged as a series of areas, including beds of medicinal plants from various cultures, plants with known medical value and those connected with physicians through the ages. There are mature London plane trees at the front, a sheltered south-facing lawn and beds to the rear. Eight gardens along St Andrews Place were planted in 2006/7 with box parterres containing plants from the 'Pharmacopeia Londinensis' published by the Royal College of Physicians in 1618.
* on The National Heritage List for England, Parks & Gardens
Park Square and Park Crescent were built on land that belonged to the Crown and were designed as part of John Nash's original conception for The Regent's Park of 1811. His plan for developing the former royal hunting chase included the 400-acre park, to be surrounded by villas and terraces. There were to be two circuses, one in the park and a south circus with the parish church in the centre where the Crescent is now. Only the southern semi-circle was realised due to financial problems. By 1823 the north half of the circus had been cancelled and replaced by a square, with its north side open to the park. Park Square was built in 1823-25 comprising two parallel terraces facing east and west across the private garden for the use of residents, which was connected to the Park Crescent garden by The Nursemaids' Tunnel under Marylebone Road. Both gardens are well laid out with lawns, numerous fine trees, flower and shrub beds.
Park Square and Park Crescent were built on land that belonged to the Crown and were designed as part of John Nash's original conception for The Regent's Park of 1811. His plan for developing the former royal hunting chase included the 400-acre park, to be surrounded by villas and terraces. There were to be two circuses, one in the park and a south circus with the parish church in the centre where the Crescent is now. Only the southern semi-circle was realised due to financial problems. By 1823 the north half of the circus had been cancelled and replaced by a square, with its north side open to the park. Park Square was built in 1823-25 comprising two parallel terraces facing east and west across the private garden for the use of residents, which was connected to the Park Crescent garden by The Nursemaids' Tunnel under Marylebone Road. Both gardens are well laid out with lawns, numerous fine trees, flower and shrub beds.
![Design for Planting the area of the two Cresents [sic] at the end of Portland Place. Courtesy Westminster City Archives.](https://secure.londongardenstrust.org/inventory/images/historic/WST077a-H1-hist.jpg)
* on The National Heritage List for England, Parks & Gardens
Park Square and Park Crescent were built on land that belonged to the Crown and were designed as part of John Nash's original conception for The Regent's Park of 1811. His plan for developing the former royal hunting chase included the 400-acre park, to be surrounded by villas and terraces. There were to be two circuses, one in the park and a south circus with the parish church in the centre where the Crescent is now. Only the southern semi-circle was realised due to financial problems. By 1823 the north half of the circus had been cancelled and replaced by a square, with its north side open to the park. Park Square was built in 1823-25 comprising two parallel terraces facing east and west across the private garden for the use of residents, which was connected to the Park Crescent garden by The Nursemaids' Tunnel under Marylebone Road. Both gardens are well laid out with lawns, numerous fine trees, flower and shrub beds.
Park Square and Park Crescent were built on land that belonged to the Crown and were designed as part of John Nash's original conception for The Regent's Park of 1811. His plan for developing the former royal hunting chase included the 400-acre park, to be surrounded by villas and terraces. There were to be two circuses, one in the park and a south circus with the parish church in the centre where the Crescent is now. Only the southern semi-circle was realised due to financial problems. By 1823 the north half of the circus had been cancelled and replaced by a square, with its north side open to the park. Park Square was built in 1823-25 comprising two parallel terraces facing east and west across the private garden for the use of residents, which was connected to the Park Crescent garden by The Nursemaids' Tunnel under Marylebone Road. Both gardens are well laid out with lawns, numerous fine trees, flower and shrub beds.
![Design for Planting the area of the two Cresents [sic] at the end of Portland Place. Courtesy Westminster City Archives.](https://secure.londongardenstrust.org/inventory/images/historic/WST077-H1-hist.jpg)