| Henry George Grey, 3rd Earl Grey | July 1846–February 1852 |
| John Pakington, 1st Baron Hampton | February 1852–December 1852 |
| Henry Pelham-Clinton, 5th Duke of Newcastle | December 1852–June 1854 |
| Sir George Grey | June 1854–February 1855 |
| Sidney Herbert | February 1855 |
| Lord John Russell | February 1855–July 1855 |
| Sir William Molesworth | July 1855–November 1855 |
| Henry Labouchere | November 1855–February 1858 |
| Edward Stanley, Lord Stanley | February 1858–June 1858 |
| Sir Edward George Earle Bulwer Lytton | June 1858–June 1859 |
| Henry Pelham-Clinton, 5th Duke of Newcastle | June 1859–April 1864 |
| Edward Cardwell | April 1864–June 1866 |
| Henry Howard Molyneux Herbert, 4th Earl of Carnarvon | July 1866–March 1867 |
| Richard Temple-Grenville, 3rd Duke of Buckingham and Chandos | March 1867–December 1868 |
| Granville Leveson-Gower, 2nd Earl Granville | December 1868–July 1870 |
| John Wodehouse, 1st Earl of Kimberley | July 1870–February 1874 |
| Charles Adderley, 1st Baron Norton | Parliamentary under-secretary for the colonies, 1866–1868 |
| John Ball | Permanent under-secretary for the colonies, 1836–1848 |
| H.H. Berens | HBC governor, 1858–1863 |
| Arthur Birch | Colonial secretary of British Columbia 1864–1866; acting governor of British Columbia, 1866–1867 |
| Arthur Johnstone Blackwood | Senior clerk in the Colonial Office, 1840–1867 |
| Richard Blanshard | Governor of Vancouver Island, 1849–1851 |
| Edward Cardwell | Secretary of state for the colonies, 1864–1866 |
| Andrew Colvile | Deputy governor of the HBC, 1839–1852; governor of the HBC, 1852–1856 |
| Charles Cox | Senior clerk in the Colonial Office, 1860–1871 |
| John Otway O’Connor Cuffe, 3rd Earl of Desart | Under-secretary for the colonies, 1852 |
| Sir James Douglas | Governor of Vancouver Island, 1851–1864; Governor of British Columbia, 1858–1864 |
| Thomas F. Elliot | Assistant under-secretary in the Colonial Office, 1847–1868 |
| William Edward Forster | Parliamentary under-secretary for the colonies, 1865–1866 |
| Chichester Fortescue | Parliamentary under-secretary for the colonies, 1857–1866 |
| J.R. Godley | Assistant under-secretary, War Office, 1855 |
| Henry George Grey, 3rd Earl Grey | Secretary of state for the colonies, 1846–1852 |
| Sir George Grey | Secretary of state for the colonies, 1854–1855 |
| Edmund Hammond | Permanent under-secretary of the British Foreign Office, 1854–1873 |
| Philip Hankin | Superintendent of police for Victoria, 1864–1866; colonial secretary for British Columbia, 1869–1871; acting governor of British Columbia, 1869 |
| Benjamin Hawes | Permanent under-secretary for the colonies, 1846–1851 |
| Henry Howard Molyneux Herbert, 4th Earl of Carnarvon | Parliamentary under-secretary for the colonies, 1858–1859; secretary of state for the colonies, 1866–1867, 1874–1878 |
| Sir Robert George Wyndham Herbert | Assistant under-secretary for the colonies, 1870; permanent under-secretary, 1871–1892 |
| Sidney Herbert | Secretary of state for the colonies, 1855 |
| Henry Turner Irving | Junior clerk in the Colonial Office, 1858–1863 |
| Vane Jadis | Assistant clerk in the Colonial Office, 1846–1867 |
| Sir Arthur Kennedy | Governor of Vancouver Island, 1864–1866 |
| Henry Labouchere, Baron Taunton | Secretary of state for the colonies, 1855–1858 |
| Granville George Leveson-Gower, 2nd Earl Granville | Secretary of state for the colonies, 1868–1870 |
| Sir Edward George Earle Bulwer Lytton | Secretary of state for the colonies, 1858–1859 |
| Herman Merivale | Permanent under-secretary for the colonies, 1848–1859 |
| Sir William Molesworth | Secretary of state for the colonies, 1855 |
| William Monsell | Parliamentary under-secretary for the colonies, 1868–1870 |
| T.W.C. Murdoch | Chairman of the Colonial Land and Emigration Commission, 1847–1876 |
| Sir Anthony Musgrave | Governor of British Columbia, 1869–1871 |
| Henry Charles Norris | Clerk in the Colonial Office, 1841–1879 |
| John Pakington, 1st Baron Hampton | Secretary of state for war and the colonies, 1852 |
| Sir Frederick Peel | Under-secretary for the colonies, 1851–1855; financial secretary to the Treasury, 1860–1865 |
| Henry Pelham-Clinton, 5th Duke of Newcastle | Secretary of state for the colonies, 1852–1854, 1859–1864 |
| Sir John Henry Pelly | Governor of the HBC, 1822–1852 |
| Frederic Rogers | Assistant under-secretary for the colonies, 1846–1847; permanent under-secretary, 1859–1871 |
| Lord John Russell | Secretary of state for the colonies, 1855 |
| Frederick Seymour | Governor of British Columbia, 1864–1868; governor of united colony, 1868–1869 |
| John Shepherd | Deputy governor of the HBC, 1852–1856; governor of the HBC, 1856–1858 |
| W.G. Smith | Secretary for the HBC, 1843–1871 |
| Edward Stanley, Lord Stanley | Secretary of state for the colonies, 1858 |
| Sir James Stephen | Permanent under-secretary for the colonies, 1836–1848 |
| H.K. Storks | Secretary for military correspondence, War Office, 1857–1859 |
| Richard Temple-Grenville, 3rd Duke of Buckingham and Chandos | Secretary of state for the colonies, 1867–1868 |
| Stephen Walcott | Secretary to the Colonial Land and Emigration Commission, 1840–1869 |
| John Wodehouse, 1st Earl of Kimberley | Secretary of state for the colonies, 1870–1874 |
| ABd | Arthur Johnstone Blackwood | Senior clerk in the Colonial Office, 1840–1867 |
| BH | Benjamin Hawes | Permanent under-secretary for the colonies, 1846–1851 |
| C | Henry Howard Molyneux Herbert, 4th Earl of Carnarvon Eton and Oxford University |
Parliamentary under-secretary for the colonies, 1858–1859; secretary of state for the colonies, 1866–1867, 1874–1878 |
| CBA | Charles Adderley, 1st Baron Norton Oxford University |
Parliamentary under-secretary for the colonies, 1866–1868 |
| CC | Charles Cox Eton |
Senior clerk in the Colonial Office, 1860–1871 |
| CF | Chichester Fortescue, 2nd Baron Clermont, 1st Baron Carlingford, Lord Carlingford Oxford University |
Parliamentary under-secretary for the colonies, 1857–1866 |
| D | John Otway O’Connor Cuffe, 3rd Earl of Desart | Under-secretary for the colonies, 1852 |
| EBL | Sir Edward George Earle Bulwer Lytton Cambridge University |
Secretary of state for the colonies, 1858–1859 |
| EC | Edward Cardwell Winchester and Balliol College |
Secretary of state for the colonies, 1864–1866 |
| EHKH | Edward Hugessen Knatchbull-Hugessen, 1st Baron Brabourne Eton and Oxford University |
Under-secretary of state for the colonies, 1871–1874 |
| FR | Frederic Rogers Eton and Oxford University |
Assistant under-secretary for the colonies, 1846–1847; permanent under-secretary, 1859–1871 |
| G | Henry George Grey, 3rd Earl Grey Cambridge University |
Secretary of state for the colonies, 1846–1852 |
| G | Granville George Leveson-Gower, 2nd Earl Granville Eton and Oxford University |
Secretary of state for the colonies, 1868–1870 |
| HCN | Henry Charles Norris | Clerk in the Colonial Office, 1841–1879 |
| HL | Henry Labouchere, Baron Taunton Winchester College and Cambridge University |
Secretary of state for the colonies, 1855–1858 |
| HM | Herman Merivale Harrow and Oxford University |
Permanent under-secretary for the colonies, 1848–1859 |
| HTI | Henry Turner Irving | Junior clerk in the Colonial Office, 1858–1863 |
| JB | John Ball Oscott College and Cambridge University |
Permanent under-secretary for the colonies, 1836–1848 |
| JS | Sir James Stephen Cambridge University |
Permanent under-secretary for the colonies, 1836–1848 |
| K | John Wodehouse, 1st Earl of Kimberley Eton and Oxford University |
Secretary of state for the colonies, 1870–1874 |
| N | Henry Pelham-Clinton, 5th Duke of Newcastle Eton and Oxford University |
Secretary of state for the colonies, 1852–1854, 1859–1864 |
| RGWH | Sir Robert George Wyndham Herbert Eton and Oxford University |
Assistant under-secretary for the colonies, 1870; permanent under-secretary, 1871–1892 |
| RM | Sir Robert Henry Meade Harrow and Cambridge University |
Under-secretary for the colonies, 1871–1892 |
| SJB | Samuel Jasper Blunt | Senior clerk, 1839–1866 |
| TFE | Thomas Frederick Elliot Harrow |
Assistant under-secretary in the Colonial Office, 1847–1868 |
| VJ | Vane Jadis | Assistant clerk in the Colonial Office, 1846–1867 |
| WD | William Dealtry Eton and Cambridge University |
Clerk, 1837–1879 |
| WEF | William Edward Forster Grove House School |
Parliamentary under-secretary for the colonies, 1865–1866 |
| WM | William Monsell Winchester College |
Parliamentary under-secretary for the colonies, 1868–1870 |
| WR | William Robinson | Assistant senior clerk, 1862–1870; Senior clerk, 1870–1871 |