Our History

We are very proud to take our name from our founder, Louis Emanuel Jean Guy de Savoie-Carignan de Soissons (1890–1962) who is perhaps most famous for creating the Master Plan of Welwyn Garden City in 1920 and in doing so revolutionising the approach to town planning, incorporating housing, retail, green space and industry. We are still involved with the town both with our custodial oversight of the legacy, regeneration, and new projects 

Throughout the 20th Century the business has been responsible for many great commissions including the regeneration of Plymouth after WWII, private estates owned by the Duchy of Cornwall, and the design and planning of Brighton Marina, one of the largest single building contracts in Europe. More recently we have delivered schemes for Lords Cricket Ground, Dulwich College and the Royal College of Obstetricians & Gynaecologists.

It is vital to note that Louis did more than simply create visions of homes and businesses on paper.

For all his insistence on certain classical values of architecture and design, he also recognised that this was not purely an intellectual exercise. He was creating structures to be used and loved by the people within them.

We are honored to be the custodians of the principles and standards of our founder set over 100 years ago which remain at the core of our business philosophy.

1920

Louis de Soissons Architects is founded by Louis Emanuel Jean Guy de Savoie-Carignan de Soissons and is commissioned to design Welwyn Garden City, works continue into the 1950’s

1926

The Shredded Wheat Factory in Welwyn garden City is opened by the 4th Marquis of Salisbury

1933

Newquay House in Kennington is completed (Now Grade II Listed)

1946

Louis appointed to re-design the war shattered City of Plymouth and a regional office is opened

1958

The Warner Stand at Lord’s Cricket Ground opens

1960

The headquarters for the Royal College of Obstetricians and Gynaecologists at 27 Sussex Road, London completes, the foundation stone was laid by HM The Queen Mother

1971

Construction begins on the Brighton Marina. HM The Queen opened the completed Marina in 1978

1974

Winchester Crown Courts is constructed

1982

Opening of a new supermarket for J Sainsbury and an office for the Danish Bacon Co. in Welwyn Garden City

1995

A new swimming pool, gymnasium and teaching block are delivered for Dulwich College Preparatory School

2005

North Street Quadrant, Brighton retail scheme developed

2010

Swan Court, Worple Road, Wimbledon completed

2018

Jack Barclay. Refurbishing the world’s most famous Bentley dealership in Mayfair.

2019

Ferrari Mayfair. Bringing the world’s most famous brand Mayfair with a world first global flagship site

2020

Louis de Soissons celebrate 100 Years and look ahead to the future

1920

Louis de Soissons Architects is founded by Louis Emanuel Jean Guy de Savoie-Carignan de Soissons and is commissioned to design Welwyn Garden City, works continue into the 1950’s

1926

The Shredded Wheat Factory in Welwyn garden City is opened by the 4th Marquis of Salisbury

1933

Newquay House in Kennington is completed (Now Grade II Listed)

1946

Louis appointed to re-design the war shattered City of Plymouth and a regional office is opened

1958

The Warner Stand at Lord’s Cricket Ground opens

1960

The headquarters for the Royal College of Obstetricians and Gynaecologists at 27 Sussex Road, London completes, the foundation stone was laid by HM The Queen Mother

1971

Construction begins on the Brighton Marina. HM The Queen opened the completed Marina in 1978

1974

Winchester Crown Courts is constructed

1982

Opening of a new supermarket for J Sainsbury and an office for the Danish Bacon Co. in Welwyn Garden City

1995

A new swimming pool, gymnasium and teaching block are delivered for Dulwich College Preparatory School

2005

North Street Quadrant, Brighton retail scheme developed

2010

Swan Court, Worple Road, Wimbledon completed

2018

Jack Barclay. Refurbishing the world’s most famous Bentley dealership in Mayfair.

2019

Ferrari Mayfair. Bringing the world’s most famous brand Mayfair with a world first global flagship site

2020

Louis de Soissons celebrate 100 Years and look ahead to the future