| 1926 | HTG CAPITAL PARTNERS UK LIMITED |
| 1927 | HUA NAN COMMERCIAL BANK LTD. |
| 1928 | HUDSON ADVISORS UK LIMITED |
| 1929 | HUDSON RIVER TRADING EUROPE LTD |
| 1930 | HUFKENS ASSET MANAGEMENT AND CO LTD |
| 1931 | HULDT INVESTMENT MANAGEMENT LIMITED |
| 1932 | HULL TRADING |
| 1933 | HUNGRY FINANCE LIMITED |
| 1934 | HUNTING KNIGHTSBRIDGE HOLDINGS LTD |
| 1935 | HURLEY PARTNERS LIMITED |
| 1936 | HUTCHINSON LILLEY INVESTMENTS |
| 1937 | HUTCHINSON VECCHINI ASSET MANAGEMENT LTD |
| 1938 | HYBRIDAN LLP |
| 1939 | HYDRA ASSOCIATES FINANCIAL SERVICES LTD |
| 1940 | HYDRA CAPITAL MANAGEMENT LTD |
| 1941 | HYPERWALLET SYSTEMS EUROPE LIMITED |
| 1942 | HYPOTHEKENBANK FRANKFURT AG LONDON BRANCH |
| 1943 | HYTHE SECURITIES LIMITED |
| 1944 | HYUNDAI SECURITIES (EUROPE) LTD |
| 1945 | I.G. INDEX PUBLIC LIMITED COMPANY |
| 1946 | IAF SECURITIES LIMITED |
| 1947 | IAI INTERNATIONAL LTD |
| 1948 | IBJ CAPITAL MANAGEMENT LTD |
| 1949 | IBJ NOMURA FINANCIAL PRODUCTS PLC |
| 1950 | ICAP CORPORATES LLC LONDON BRANCH |