| CHASE, Graham ACTIVE | Director | 01 Jan 2023 | | England | January 1954 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| DRAKE, Graham Lindsay ACTIVE | Director | 24 Aug 2021 | | United Kingdom | February 1944 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| ERSKINE-MURRAY, Clare ACTIVE | Director | 01 Jul 2023 | | Scotland | July 1969 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| KELLY, David Paul ACTIVE | Director | 28 Sep 2010 | | United Kingdom | January 1962 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| MANNING, Lee Antony ACTIVE | Director | 31 Dec 2024 | | England | November 1957 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| MIZNER, Gordon Anthony, Dr ACTIVE | Director | 26 Feb 2024 | | England | February 1952 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| NASH, Benjamin Roger ACTIVE | Director | 08 Jun 2020 | | United Kingdom | August 1972 | Old Millhillians Club, Mill Hill School, The Ridgeway, London, NW7 1QS, United Kingdom |
| POLLOCK, Julian Henning ACTIVE | Director | 28 Sep 2010 | | England | April 1970 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| ROWLAND, Scott Mark ACTIVE | Director | 28 Sep 2010 | | United Kingdom | July 1964 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| WAKEHAM, Peter Ronald ACTIVE | Director | 06 Jan 2020 | | England | February 1947 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| COHN, Ronald Peter Hardy RESIGNED | Secretary | 28 Sep 2010 | 31 Dec 2021 | | | 5, Mountway, Potters Bar, Hertfordshire, EN6 1ER |
| GARDNER, Roger James RESIGNED | Secretary | | 28 Sep 2010 | | | The Clock House, Corton Denham, Sherborne, Dorset, DT9 4LR |
| AHMED, Asif RESIGNED | Director | 08 Jun 2020 | 12 May 2026 | United Kingdom | November 1985 | Old Millhillians Club, Mill Hill School, The Ridgeway, London, NW7 1QS, United Kingdom |
| COHN, Ronald Peter Hardy RESIGNED | Director | | 31 Dec 2021 | England | September 1945 | 5, Mountway, Potters Bar, Hertfordshire, EN6 1ER, England |
| GARDNER, Roger James RESIGNED | Director | | 28 Sep 2010 | England | May 1939 | The Clock House, Corton Denham, Sherborne, Dorset, DT9 4LR |
| GREEN, Charles Richard RESIGNED | Director | 28 Sep 2010 | 14 Jul 2026 | United Kingdom | July 1970 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| KING, John David Michael RESIGNED | Director | | 11 Sep 2006 | | January 1943 | 64 Stamford Road, Oakham, Rutland, LE15 6JA |
| MORTIMER, Andrew Stuart RESIGNED | Director | | 08 Jun 2020 | England | August 1943 | 16a Park View Road, Finchley, London, N3 2JB |
| SATANAS, Solon RESIGNED | Director | 06 Sep 2021 | 02 May 2023 | Spain | January 1971 | Old Millhillians Club, Mill Hill School The Ridgeway, Mill Hill, London, NW7 1QS |
| WATKISS, John Barrie RESIGNED | Director | | 28 Sep 2010 | England | September 1937 | Jordans, Trout Rise, Loudwater, Rickmansworth, Hertfordshire, WD4 4JU |
| WERNHAM, Stewart Frederick RESIGNED | Director | 11 Sep 2006 | 28 Sep 2010 | England | March 1960 | 21 Baxendale, Whetstone, London, N20 0EG |