| LINGARD, Toby ACTIVE | LLP Designated Member | 14 Jul 2011 | | England | October 1974 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| SHARMA, Sutesh Kumar ACTIVE | LLP Designated Member | 14 Jul 2011 | | England | April 1963 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| ATTAL, Julien Charles ACTIVE | LLP Member | 31 Mar 2023 | | United Kingdom | December 1975 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| GABRIEL, Alexander John ACTIVE | LLP Member | 01 Jul 2023 | | United Kingdom | June 1984 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| HEATON-ARMSTRONG, Alistair Mark ACTIVE | LLP Member | 01 Apr 2022 | | United Kingdom | November 1971 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| KHAN, Yusaf ACTIVE | LLP Member | 11 Sep 2012 | | England | January 1968 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| LUSSAULT, Bastien ACTIVE | LLP Member | 31 Mar 2023 | | United Kingdom | March 1977 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| DARMOUNI, David, Mr. RESIGNED | LLP Member | 11 Sep 2012 | 01 Apr 2013 | England | April 1975 | 4th, Floor, 43-45 Portman Square, London, W1H 6LY, England |
| DAS, Lalit RESIGNED | LLP Member | 11 Sep 2012 | 31 Mar 2026 | England | January 1968 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| ESPOSITO, Vincenzo Alessandro RESIGNED | LLP Member | 01 Jan 2019 | 31 May 2026 | United Kingdom | August 1977 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| GODFREY, Paul, Mr. RESIGNED | LLP Member | 11 Sep 2012 | 01 Apr 2013 | United Kingdom | September 1975 | 4th, Floor, 43-45 Portman Square, London, W1H 6LY, England |
| GUPTA, Akash Neil RESIGNED | LLP Member | 11 Sep 2012 | 31 Mar 2019 | England | June 1983 | 25, North Row, London, W1K 6DJ, United Kingdom |
| HUSSEY, Christopher RESIGNED | LLP Member | 01 Mar 2013 | 03 Aug 2015 | England | March 1975 | Ground Floor, 43-45 Portman Square, London, W1H 6LY, England |
| IMBERT, Sylvain RESIGNED | LLP Member | 11 Sep 2012 | 24 Apr 2015 | United Kingdom | July 1979 | 4th, Floor, 43-45 Portman Square, London, W1H 6LY, England |
| KANAAN, Imad RESIGNED | LLP Member | 11 Sep 2012 | 01 Apr 2013 | England | May 1975 | 4th, Floor, 43-45 Portman Square, London, W1H 6LY, England |
| KELLEY, Simon RESIGNED | LLP Member | 11 Sep 2012 | 01 Apr 2013 | England | July 1970 | 4th Floor, 43-45 Portman Square, London, W1H 6LY, England |
| MACK, Andrew John RESIGNED | LLP Member | 11 Sep 2012 | 01 Apr 2013 | England | December 1961 | 4th, Floor, 43-45 Portman Square, London, W1H 6LY, England |
| TOIETTA, Luca RESIGNED | LLP Member | 31 Mar 2023 | 13 Dec 2024 | United Kingdom | May 1986 | 6th Floor, 10 Portman Square, London, W1H 6AZ, United Kingdom |
| TURNER, Jake RESIGNED | LLP Member | 11 Sep 2012 | 01 Apr 2013 | England | November 1983 | 4th Floor, 43-45 Portman Square, London, W1H 6LY, England |
| PORTMAN SQUARE (UK) LIMITED RESIGNED | LLP Member | 11 Sep 2012 | 29 Aug 2019 | | | 39, Elm Tree Road, London, NW8 9JR, England |