| 🥇 | NEO ENERGY NATURAL RESOURCES LIMITED | 100Excellent | #18 | New | Property |
| 🥈 | PFPL (HOLDINGS) LTD. | 100Excellent | #2 | ↑ 1.5 | — |
| 🥉 | AKO CAPITAL LLP | 100Excellent | #3 | – 0.0 | Financial Services |
| #4 | NORTHILL UK MANAGEMENT HOLDINGS LIMITED | 100Excellent | #37 | ↑ 11.4 | — |
| #5 | OUTDOOR MEDIACOM LIMITED | 100Excellent | #6 | – 0.0 | Professional Services |
| #6 | OSBORNE CLARKE SERVICES | 100Excellent | #4 | ↑ 1.8 | — |
| #7 | IPG DXTRA GROUP HOLDINGS LIMITED | 100Excellent | #6 | ↑ 1.9 | — |
| #8 | CHASEDESIGN WORLDWIDE LIMITED | 100Excellent | #9 | ↑ 2.6 | Professional Services |
| #9 | IPG EUROPE LTD | 100Excellent | #7 | – 0.0 | — |
| #10 | HELLO ELEPHANT LTD | 100Excellent | #8 | ↑ 44.0 | Professional Services |
| #11 | YEAR9 LTD | 100Excellent | #10 | ↑ 8.9 | Professional Services |
| #12 | AKO FOUNDATION | 100Excellent | #12 | – 0.0 | — |
| #13 | TRADEWILL LIMITED | 100Excellent | #13 | ↑ 0.4 | — |
| #14 | AKO SUBSIDIARY 2020 LIMITED | 100Excellent | #14 | New | — |
| #15 | INEOS UK SNS LIMITED | 100Excellent | #17 | ↑ 7.3 | — |
| #16 | FORELAND SHIPPING LIMITED | 100Excellent | #21 | New | Supply Chain |
| #17 | BROOKFIELD GLOBAL INFRASTRUCTURE ADVISOR LIMITED | 100Excellent | #27 | ↑ 2.4 | — |
| #18 | BARINGS (U.K.) LIMITED | 100Excellent | #30 | — | — |
| #19 | FIDELIS UNDERWRITING LIMITED | 100Excellent | #46 | ↑ 1.1 | Financial Services |
| #20 | SILCHESTER CONTINUATION LIMITED | 100Excellent | #49 | – 0.0 | Financial Services |
| #21 | SAINSBURY PROPCO A LIMITED | 100Excellent | #52 | – 0.0 | — |
| #22 | KNIGHT FRANK SERVICES COMPANY | 100Excellent | #55 | – 0.0 | — |
| #23 | EASTERN POWER NETWORKS PLC | 100Excellent | #58 | – 0.0 | — |
| #24 | AMALGAMET LIMITED | 100Excellent | #60 | – 0.0 | Supply Chain |
| #25 | SILCHESTER INTERNATIONAL INVESTORS LLP | 100Excellent | #63 | – 0.0 | Financial Services |
| #26 | INFRASTRUCTURE INVESTMENTS GROUP LIMITED | 100Excellent | #64 | ↑ 6.8 | — |
| #27 | OPET INTERNATIONAL LIMITED | 100Excellent | #66 | – 0.0 | — |
| #28 | ARCH SYNDICATE INVESTMENTS LTD | 100Excellent | #31 | – 0.0 | Financial Services |
| #29 | SILCHESTER PARTNERS LIMITED | 100Excellent | #39 | – 0.0 | — |
| #30 | KHL MORTGAGE SERVICES LIMITED | 100Excellent | #40 | New | — |
| #31 | TRANSRE LONDON LIMITED | 100Excellent | #45 | – 0.0 | Financial Services |
| #32 | ITV DIGITAL CHANNELS LIMITED | 100Excellent | #35 | ↑ 38.8 | Creative |
| #33 | ELEVATE EAST LONDON LLP | 100Excellent | #50 | ↑ 20.0 | Information Technology |
| #34 | LOMBARD NORTH CENTRAL PUBLIC LIMITED COMPANY | 100Excellent | #33 | ↑ 0.9 | — |
| #35 | OCTAGON ATHLETE REPRESENTATION LIMITED | 100Excellent | #68 | ↑ 1.4 | — |
| #36 | INVESTCORP CREDIT MANAGEMENT EU LIMITED | 100Excellent | #69 | New | — |
| #37 | HOGG ROBINSON LIMITED | 100Excellent | #70 | ↑ 3.6 | — |
| #38 | DANNY SULLIVAN & SONS LTD. | 100Excellent | #72 | – 0.0 | Property |
| #39 | FIRST SENTIER INVESTORS (UK) FUNDS LIMITED | 100Excellent | #76 | ↑ 7.9 | — |
| #40 | SMARTESTENERGY LIMITED | 100Excellent | #78 | ↓ 0.1 | Property |
| #41 | REED & MACKAY TRAVEL LIMITED | 100Excellent | #80 | ↑ 0.2 | Lifestyle And Entertainment |
| #42 | AON INVESTMENTS LIMITED | 100Excellent | #81 | ↑ 0.2 | — |
| #43 | RBS INVOICE FINANCE LIMITED | 100Excellent | #77 | ↑ 0.7 | Software |
| #44 | JMK BUSINESS SOLUTIONS LIMITED | 99Excellent | #83 | — | Financial Services |
| #45 | CAPITA EMPLOYEE BENEFITS CONSULTING LIMITED | 99Excellent | #85 | ↑ 0.6 | — |
| #46 | SH EURO FINANCE PLC | 99Excellent | #92 | ↓ 0.6 | — |
| #47 | MOTABILITY OPERATIONS LIMITED | 99Excellent | #87 | ↓ 0.2 | — |
| #48 | INTERPUBLIC LIMITED | 99Excellent | #87 | ↑ 0.8 | Professional Services |
| #49 | CAPITA RETAIL FINANCIAL SERVICES LIMITED | 99Excellent | #89 | ↓ 0.2 | — |
| #50 | PARADIGM TRUST | 99Excellent | #90 | ↑ 13.0 | Education |
| #51 | MYCITYDEAL LIMITED | 99Excellent | #92 | ↓ 0.3 | — |
| #52 | LION ACADEMY TRUST | 99Excellent | #94 | ↑ 0.1 | Education |
| #53 | CAPITA INTERNATIONAL LIMITED | 99Excellent | #95 | ↑ 8.1 | — |
| #54 | CAPITA INSURANCE SERVICES LIMITED | 99Excellent | #101 | ↑ 0.4 | Financial Services |
| #55 | AXA PPP HEALTHCARE LIMITED | 99Excellent | #102 | – 0.0 | Financial Services |
| #56 | MCCANN-ERICKSON HEALTHCARE UK LIMITED | 99Excellent | #107 | ↑ 4.4 | Professional Services |
| #57 | MCDONALD'S RESTAURANTS LIMITED | 99Excellent | #109 | ↑ 0.1 | Lifestyle And Entertainment |
| #58 | STHREE PARTNERSHIP LLP | 99Excellent | #110 | – 0.0 | Professional Services |
| #59 | FINANCIAL SERVICES COMPENSATION SCHEME LIMITED | 99Excellent | #112 | ↓ 0.2 | — |
| #60 | HOGG ROBINSON (TRAVEL) LIMITED | 99Excellent | #111 | ↑ 1.0 | Travel And Transportation |
| #61 | JACK MORTON WORLDWIDE LIMITED | 99Excellent | #120 | ↑ 0.6 | — |
| #62 | FCB HEALTH HAMPSHIRE LIMITED | 99Excellent | #121 | ↑ 2.1 | Professional Services |
| #63 | RENAISSANCERE SERVICES (UK) LIMITED | 99Excellent | #122 | ↑ 0.7 | Professional Services |
| #64 | AIG ASSET MANAGEMENT (EUROPE) LIMITED | 99Excellent | #125 | ↑ 0.5 | Financial Services |
| #65 | BARCLAYS INSURANCE SERVICES COMPANY LIMITED | 99Excellent | #123 | ↑ 0.4 | Financial Services |
| #66 | TDX GROUP LIMITED | 99Excellent | #130 | ↑ 1.5 | Software |
| #67 | AXA SERVICES LIMITED | 99Excellent | #127 | ↓ 0.4 | — |
| #68 | ROYAL LONDON MANAGEMENT SERVICES LIMITED | 99Excellent | #128 | ↑ 40.7 | Financial Services |
| #69 | HUGE UK LIMITED | 99Excellent | #131 | ↓ 0.2 | Professional Services |
| #70 | MRM WORLDWIDE (UK) LIMITED | 99Excellent | #133 | ↑ 1.1 | Professional Services |
| #71 | COUTTS & COMPANY | 99Excellent | #137 | ↑ 2.1 | Financial Services |
| #72 | SECRET ESCAPES LIMITED | 99Excellent | #143 | ↑ 0.8 | Supply Chain |
| #73 | ICBC STANDARD BANK PLC | 99Excellent | #138 | ↑ 0.1 | Financial Services |
| #74 | MCCANN-ERICKSON EMEA LIMITED | 99Excellent | #142 | ↓ 0.6 | — |
| #75 | INTERPUBLIC GIS (UK) LIMITED | 99Excellent | #144 | ↑ 1.3 | — |
| #76 | EAU ROUGE PROPERTIES, LTD. | 99Excellent | #143 | ↑ 0.0 | — |
| #77 | THE BROOKLYN BROTHERS LIMITED | 99Excellent | #147 | ↑ 17.2 | Professional Services |
| #78 | BARCLAYS INVESTMENT SOLUTIONS LIMITED | 99Excellent | #149 | ↓ 0.2 | — |
| #79 | GROSVENOR WEST END PROPERTIES | 99Excellent | #150 | ↑ 2.3 | — |
| #80 | STANDARD CHARTERED BANK | 99Excellent | #152 | ↑ 0.4 | Financial Services |
| #81 | PHARO MANAGEMENT (UK) LLP | 99Excellent | #148 | ↑ 3.5 | Financial Services |
| #82 | AMERICAN EXPRESS SERVICES EUROPE LIMITED | 99Excellent | #155 | ↑ 0.0 | Travel And Transportation |
| #83 | NATIONAL WESTMINSTER BANK PUBLIC LIMITED COMPANY | 99Excellent | #157 | ↑ 0.8 | Financial Services |
| #84 | BROWN SHIPLEY & CO. LIMITED | 99Excellent | #158 | ↓ 0.1 | Financial Services |
| #85 | OCTAGON WORLDWIDE LIMITED | 98Excellent | #160 | – 0.0 | Professional Services |
| #86 | VIRGO HEALTH LIMITED | 98Excellent | #161 | ↑ 2.0 | — |
| #87 | RSM UK MANAGEMENT LIMITED | 98Excellent | #162 | ↑ 3.7 | — |
| #88 | PFPL PROJECTS SURREY HEATH LTD | 98Excellent | #165 | ↓ 1.6 | Lifestyle And Entertainment |
| #89 | DL INSURANCE SERVICES LIMITED | 98Excellent | #166 | ↓ 1.0 | Financial Services |
| #90 | GLOBAL BANKING SCHOOL LIMITED | 98Excellent | #172 | New | — |
| #91 | TUDOR CAPITAL EUROPE LLP | 98Excellent | #173 | ↓ 0.8 | Financial Services |
| #92 | ARCHITAS LIMITED | 98Excellent | #166 | ↑ 0.7 | — |
| #93 | CHRISTIE MANSON & WOODS LIMITED | 98Excellent | #176 | ↓ 0.1 | — |
| #94 | AMERICAN EXPRESS GROUP SERVICES LIMITED | 98Excellent | #179 | ↑ 0.7 | — |
| #95 | EDITEC MARKETING CONSULTING LIMITED | 98Excellent | #181 | ↓ 0.1 | — |
| #96 | UK PROGRAMME DISTRIBUTION LIMITED | 98Excellent | #182 | – 0.0 | Creative |
| #97 | BROOKFIELD GLOBAL RENEWABLE ENERGY ADVISOR LIMITED | 98Excellent | #184 | ↑ 2.0 | — |
| #98 | HSL (ANALYTICS) LLP | 98Excellent | #188 | ↑ 0.9 | — |
| #99 | HARVEY NASH LIMITED | 98Excellent | #188 | – 0.0 | Professional Services |
| #100 | ASPECT CAPITAL LIMITED | 98Excellent | #190 | ↑ 1.8 | Financial Services |
