| 1 | Avantulo S.A LIMITED | Unitedkingdom | Bolton | 102 Chorley Old Road | Manchester, Greater Manchester | BL1 3AE | N/A | 2022 | $31,949,432,802 | 539 | N/A | N/A | N/A |
| 2 | Cognizant Worldwide LIMITED | Unitedkingdom | Moorgate | Bolingbroke Office Unit Trust | London | EC2M 4AG | cognizant.***** | 2010 | $14,194,029,096 | 7,135 | N/A | N/A | N/A |
| 3 | Txu Europe LIMITED | Unitedkingdom | Moorgate | 10 Fleet Place | London | EC4M 7QS | N/A | 1998 | $6,990,863,760 | 4,806 | N/A | N/A | N/A |
| 4 | Bureau Veritas | Unitedkingdom | Aston | Suite 206 Fort Dunlop | Birmingham, West Midlands | B24 9FD | bureauveritas.***** | 1908 | $5,490,013,083 | 30 | N/A | N/A | N/A |
| 5 | Accenture (UK) LIMITED | Unitedkingdom | Moorgate | 30 Fenchurch Street | London | EC3M 3BD | accenture.***** | 2001 | $4,387,246,592 | 11,704 | N/A | N/A | N/A |
| 6 | Exigere LTD | Unitedkingdom | Stanmore | Flat 29 | London | HA7 4WY | exigere.***** | 2018 | $2,542,386,000 | 36 | N/A | N/A | N/A |
| 7 | Serco LIMITED | Unitedkingdom | Hook | Serco House 16 Bartley Wood Business Park | Hampshire | RG27 9UY | serco.***** | 1999 | $2,516,348,770 | 18,251 | N/A | N/A | N/A |
| 8 | Panasonic UK, A Branch Of Panasonic Marketing Europe GMBH | Unitedkingdom | Bracknell | Maxis 2 | Bracknell Forest | RG12 1RT | panasonic.***** | 1972 | $2,446,354,677 | 1,389 | N/A | N/A | N/A |
| 9 | Beaufond LIMITED | Unitedkingdom | London | 134 Buckingham Palace Road | London | SW1W 9SA | N/A | 2019 | $2,268,641,105 | 116 | N/A | N/A | N/A |
| 10 | Ey Gds Holdings Cooperatief U.A. | Unitedkingdom | Rotherhithe | 6 More London Place | London | SE1 2DA | ey.***** | 2017 | $2,057,000,000 | 54,724 | N/A | N/A | N/A |
| 11 | Infobip LIMITED | Unitedkingdom | Moorgate | 35-38 New Bridge Street | London | EC4V 6BW | infobip.***** | 2006 | $1,958,399,065 | 3,345 | N/A | N/A | N/A |
| 12 | Clarivate PLC | Unitedkingdom | Jersey | Liberation House | Channel Islands | JE1 1BL | N/A | 2019 | $1,876,894,000 | 200 | N/A | N/A | N/A |
| 13 | Xtx Research Llp | Unitedkingdom | Saint Johns Wood | R7 14-18 Handyside Street | London | N1C 4DN | N/A | 2015 | $1,623,498,787 | 50 | N/A | N/A | N/A |
| 14 | Harvest Energy LIMITED | Unitedkingdom | Birmingham | C/o Teneo Financial Advisory Ltd | Birmingham, West Midlands | B4 6AT | harvestenergy.***** | 1994 | $1,561,812,817 | 2 | N/A | N/A | N/A |
| 15 | Merlin Network (global Independent Digital) Company LIMITED By Guarantee | Unitedkingdom | Holborn | 53 Parker Street | London | WC2B 5PT | merlinnetwork.***** | 2020 | $1,485,699,589 | 42 | N/A | N/A | N/A |
| 16 | Ernst & Young Services LIMITED | Unitedkingdom | Rotherhithe | 1 More London Place | London | SE1 2AF | ey.***** | 1993 | $1,321,283,832 | 10,518 | N/A | N/A | N/A |
| 17 | Bryt Energy LIMITED | Unitedkingdom | Aston | Cornerblock | Birmingham, West Midlands | B3 2DX | brytenergy.***** | 2016 | $1,199,537,269 | 7 | N/A | N/A | N/A |
| 18 | The Boston Consulting Group UK Llp | Unitedkingdom | Saint Giles | 80 Charlotte Street | London | W1T 4DF | bcg.***** | 2010 | $1,061,190,648 | 1,916 | N/A | N/A | N/A |
| 19 | Mckinsey & Company INC United Kingdom | Unitedkingdom | Saint Giles | 100-101 Museum Street | London | WC1A 1PB | mckinsey.***** | 2007 | $1,026,749,503 | 260 | N/A | N/A | N/A |
| 20 | Pa Consulting Services LIMITED | Unitedkingdom | London | 10 Bressenden Place | London | SW1E 5DN | paconsulting.***** | 1946 | $970,105,060 | 479 | N/A | N/A | N/A |
| 21 | Abeam Consulting LTD., UK Branch | Unitedkingdom | Moorgate | Tower 42 | London | EC2N 1HN | nmg-group.***** | 2016 | $936,062,843 | 298 | N/A | N/A | N/A |
| 22 | Sierracol Energy Andina, LLC | Unitedkingdom | London | 1 St James'S Market | London | SW1Y 4AH | N/A | 2020 | $921,482,000 | 580 | N/A | N/A | N/A |
| 23 | Reforest Africa | Unitedkingdom | Princes Risborough | 5 the Crescent | Buckinghamshire | HP27 0HT | N/A | 2019 | $914,077,308 | 52 | N/A | N/A | N/A |
| 24 | Belron Finance LIMITED | Unitedkingdom | Richmond | The Kings Observatory | London | TW9 2AZ | equipmentfinance.***** | 1999 | $887,010,751 | 23 | N/A | N/A | N/A |
| 25 | Beverage Services LIMITED | Unitedkingdom | Marylebone | Kingsley House | London | W1G 0EA | N/A | 1987 | $854,904,445 | 269 | N/A | N/A | N/A |
| 26 | Shell International LIMITED | Unitedkingdom | London | Shell Centre | London | SE1 7NA | shell.***** | 1995 | $849,339,506 | 1,049 | N/A | N/A | N/A |
| 27 | Oliver Wyman LIMITED | Unitedkingdom | Marylebone | 55 Baker Street | London | W1U 8EW | oliverwyman.***** | 1991 | $804,818,094 | 747 | N/A | N/A | N/A |
| 28 | Neuven Solutions LIMITED | Unitedkingdom | Benchill | Manchester International Office Centre | Manchester, Greater Manchester | M22 5WB | neuven.***** | 2007 | $775,902,086 | 116 | N/A | N/A | N/A |
| 29 | Wave LTD | Unitedkingdom | Durham | Northumbria House Abbey Road | Durham | DH1 5FJ | wave-utilities.***** | 2008 | $628,863,537 | 327 | N/A | N/A | N/A |
| 30 | Sr West Group LIMITED | Unitedkingdom | Newton Mearns | C/o Paterton and Co | East Renfrewshire | G77 6AH | N/A | 2025 | $616,179,519 | 11,418 | N/A | N/A | N/A |
| 31 | Umbrella-Company LIMITED | Unitedkingdom | Wilmslow | Bollin House | Cheshire East | SK9 1DP | umbrella.***** | 2009 | $602,173,702 | 60 | N/A | N/A | N/A |
| 32 | 3m United Kingdom Public LIMITED Company | Unitedkingdom | Bracknell | 3 M Centre | Bracknell Forest | RG12 8HT | 3m.***** | 1973 | $586,708,583 | 1,035 | N/A | N/A | N/A |
| 33 | Alixpartners LTD | Unitedkingdom | Moorgate | 6 New St Square | London | EC4A 3BF | alixpartners.***** | 2002 | $559,223,034 | 929 | N/A | N/A | N/A |
| 34 | Baringa Partners Llp | Unitedkingdom | London | 62 Buckingham Gate | London | SW1E 6AJ | baringa.***** | 2002 | $549,236,130 | 1,763 | N/A | N/A | N/A |
| 35 | Freshfields Service Company | Unitedkingdom | Moorgate | 100 Bishopsgate | London | EC2P 2SR | N/A | 1963 | $531,357,142 | 1,753 | N/A | N/A | N/A |
| 36 | First Merchant Processing (UK) LIMITED | Unitedkingdom | Basildon | Janus House | Essex | SS14 3WF | N/A | 2021 | $518,284,502 | 10 | N/A | N/A | N/A |
| 37 | Blue Water Alliance Jv Llp | Unitedkingdom | Moorgate | 8th Floor | London | EC2N 4AG | N/A | 2022 | $506,303,000 | 217 | N/A | N/A | N/A |
| 38 | Brookfield Global Infrastructure Advisor LIMITED | Unitedkingdom | Stepney | 1 Canada Square | London | E14 5AA | N/A | 2002 | $503,002,505 | 308 | N/A | N/A | N/A |
| 39 | Alphasights LTD | Unitedkingdom | Moorgate | Thames Court | London | EC4V 3DX | alphasights.***** | 2008 | $487,387,000 | 1,613 | N/A | N/A | N/A |
| 40 | Ernst & Young Accountants Llp | Unitedkingdom | Rotherhithe | 1 More London Place | London | SE1 2AF | ey.***** | 2008 | $482,395,228 | 2,070 | N/A | N/A | N/A |
| 41 | Vaalco Energy, INC. | Unitedkingdom | Marylebone | 17 Hanover Square | London | W1S 1BN | N/A | 2021 | $478,988,000 | 117 | N/A | N/A | N/A |
| 42 | Sterling And Wilson Renewable Energy LIMITED UK Branch | Unitedkingdom | Harrow | Congress House (c/o Atkins & Partners) | London | HA1 2EN | N/A | 2021 | $464,414,019 | 148 | N/A | N/A | N/A |
| 43 | Mm (sw) Holdings LIMITED | Unitedkingdom | Chepstow | Mon House | Monmouthshire | NP16 6UD | N/A | 2015 | $443,639,870 | 573 | N/A | N/A | N/A |
| 44 | Sapient LIMITED | Unitedkingdom | Finsbury | Turnmill | London | EC1M 5RR | publicissapient.***** | 1996 | $438,068,306 | 1,449 | N/A | N/A | N/A |
| 45 | Balyasny Asset Management (UK) Llp | Unitedkingdom | London | 4th Floor | London | SW1Y 6QY | bamsons.***** | 2001 | $437,971,185 | 219 | N/A | N/A | N/A |
| 46 | Aon Solutions UK LIMITED | Unitedkingdom | City of London | The Aon Centre the Leadenhall Building | London | EC3V 4AN | aon.***** | 2002 | $429,756,875 | 1,557 | N/A | N/A | N/A |
| 47 | V4 UK Holdings LIMITED | Unitedkingdom | Altrincham | 3rd Floor | Manchester, Greater Manchester | WA14 2DT | N/A | 2016 | $428,680,503 | 97 | N/A | N/A | N/A |
| 48 | Henkel LIMITED | Unitedkingdom | Potten End | Wood Lane End | Hertfordshire | HP2 4RQ | henkel.***** | 1926 | $420,207,426 | 470 | N/A | N/A | N/A |
| 49 | Mjt Securities LIMITED | Unitedkingdom | Laindon | Service Ho | Essex | SS15 6RW | N/A | 1991 | $419,207,657 | 442 | N/A | N/A | N/A |
| 50 | Redshaw Advisors LIMITED | Unitedkingdom | Greenwich | 279-283 Greenwich High Road | London | SE10 8NB | redshawadvisors.***** | 2014 | $410,814,007 | 22 | N/A | N/A | N/A |
| 51 | Eden Automotive Investments LIMITED | Unitedkingdom | Southcote | 38-40 Portman Road | Reading | RG30 1JG | N/A | 2007 | $408,117,275 | 663 | N/A | N/A | N/A |
| 52 | Mckinsey & Company Lme LIMITED | Unitedkingdom | Saint Giles | The Post Building | London | WC1A 1PB | mckinsey.***** | 2013 | $407,327,900 | 488 | N/A | N/A | N/A |
| 53 | Platform Housing LIMITED | Unitedkingdom | Sutton Coldfield | 1700 Solihull Parkway | Birmingham, West Midlands | B37 7YD | platformhg.***** | 2019 | $405,668,793 | 976 | N/A | N/A | N/A |
| 54 | Cfc Group LIMITED | Unitedkingdom | Moorgate | 8 Bishopsgate | London | EC2N 4BQ | cfcunderwriting.***** | 2021 | $397,981,158 | 923 | N/A | N/A | N/A |
| 55 | Anaplan LIMITED | Unitedkingdom | Saint Johns Wood | 338 Euston Road | London | NW1 3BT | anaplan.***** | 2007 | $386,216,568 | 521 | N/A | N/A | N/A |
| 56 | Giant Precision LIMITED | Unitedkingdom | Moorgate | Fourth Floor | London | WC1V 6LJ | giantgroup.***** | 2004 | $364,976,522 | 3,701 | N/A | N/A | N/A |
| 57 | Hazelwood Motor Company LTD | Unitedkingdom | Matford | C/o the Finance Director | Devon | EX2 8FD | N/A | 2012 | $363,561,056 | 699 | N/A | N/A | N/A |
| 58 | Gb Group PLC | Unitedkingdom | Balderton | The Foundation | Cheshire West and Chester | CH4 9GB | gbgplc.***** | 1989 | $357,632,764 | 1,132 | N/A | N/A | N/A |
| 59 | Mark Group LIMITED | Unitedkingdom | Cardiff | C/o 01304470 - Companies House Default Address | Cardiff | CF14 8LH | N/A | 1977 | $354,323,690 | 1,844 | N/A | N/A | N/A |
| 60 | Wood Mackenzie LIMITED | Unitedkingdom | Edinburgh | Wood Mackenzie Exchange Place 2 | City of Edinburgh | EH3 8BL | woodmac.***** | 1973 | $344,255,376 | 824 | N/A | N/A | N/A |
| 61 | Belron Reserveco LIMITED | Unitedkingdom | Egham | Milton Park | Surrey | TW20 9EL | N/A | 2022 | $331,344,374 | 8 | N/A | N/A | N/A |
| 62 | Pearl Global (hk) LIMITED | Unitedkingdom | Wembley | Unit 1/2 - 25 Wembley Commercial Centre | London | HA9 7XX | N/A | 2021 | $323,027,215 | 515 | N/A | N/A | N/A |
| 63 | Turner & Townsend Project Management LIMITED | Unitedkingdom | Collingham | Low Hall, Calverley Lane / Low Hall Road | Leeds, West Yorkshire | LS18 4GH | turnerandtownsend.***** | 1946 | $319,351,073 | 1,053 | N/A | N/A | N/A |
| 64 | Ey Advisory Netherlands Llp | Unitedkingdom | Rotherhithe | 1 More London Place | London | SE1 2AF | ey.***** | 2019 | $317,523,303 | 941 | N/A | N/A | N/A |
| 65 | Banking Circle S.A. | Unitedkingdom | Moorgate | 68 King William Street | London | EC4N 7HR | N/A | 2019 | $306,571,322 | 612 | N/A | N/A | N/A |
| 66 | Alixpartners UK Llp | Unitedkingdom | Moorgate | 6 New Street Square | London | EC4A 3BF | alixpartners.***** | 2010 | $298,551,097 | 532 | N/A | N/A | N/A |
| 67 | Wgpsn (holdings) LIMITED | Unitedkingdom | Charlestown | Sir Ian Wood House | Aberdeen City | AB12 3LE | woodplc.***** | 2005 | $297,919,461 | 5,673 | N/A | N/A | N/A |
| 68 | Actium Holdings LIMITED | Unitedkingdom | Moorgate | 60 Gresham Street | London | EC2V 7BB | alphafmc.***** | 2016 | $296,496,057 | 1,061 | N/A | N/A | N/A |
| 69 | Makita (UK) LIMITED | Unitedkingdom | Bolbeck Park | Vermont Place | Milton Keynes | MK15 8JD | makitauk.***** | 1995 | $294,270,037 | 240 | N/A | N/A | N/A |
| 70 | Alvarez & Marsal Europe Llp | Unitedkingdom | Moorgate | 30 Old Bailey | London | EC4M 7AU | N/A | 2007 | $293,572,788 | 601 | N/A | N/A | N/A |
| 71 | Devenish (ni) LIMITED | Unitedkingdom | Sydenham Intake | At Offices of Devenish Nutrition Ltd | Belfast | BT3 9AR | devenishnutrition.***** | 1996 | $289,359,929 | 506 | N/A | N/A | N/A |
| 72 | Anderson Consulting | Unitedkingdom | Marylebone | 2 Arundel St | London | WC2R 3LT | andersoneg.***** | 1990 | $269,828,130 | 5,000 | N/A | N/A | N/A |
| 73 | Korn Ferry (UK) LIMITED | Unitedkingdom | London | Ryder Court | London | SW1Y 6QB | kornferry.***** | 1963 | $254,795,439 | 997 | N/A | N/A | N/A |
| 74 | Efficio Global Consulting LTD | Unitedkingdom | London | Kinnaird House | London | SW1Y 5AU | efficioconsulting.***** | 2021 | $253,236,281 | 1,071 | N/A | N/A | N/A |
| 75 | Firstsource Solutions UK LIMITED | Unitedkingdom | Saint Giles | Lynton House | London | WC1H 9LT | N/A | 2000 | $251,634,234 | 4,502 | N/A | N/A | N/A |
| 76 | Valpak LIMITED | Unitedkingdom | Stratford-upon-avon | Unit 4, Montague House | Warwickshire | CV37 7GW | valpak.***** | 1997 | $245,420,559 | 360 | N/A | N/A | N/A |
| 77 | OC&C Strategy Consultants Llp | Unitedkingdom | Moorgate | 6 New Street Square | London | EC4A 3AT | occstrategy.***** | 1906 | $243,133,468 | 715 | N/A | N/A | N/A |
| 78 | Kin And Carta Holdco LIMITED | Unitedkingdom | Upper Holloway | 10-14 White Lion Street | London | N1 9PD | theappbusiness.***** | 1964 | $242,400,365 | 1,869 | N/A | N/A | N/A |
| 79 | M J Mapp | Unitedkingdom | Liverpool | 39 Old Hall Street | Liverpool, Merseyside | L3 9PP | mjmapp.***** | 2012 | $241,368,392 | 4,500 | N/A | N/A | N/A |
| 80 | Fiat Flow Solutions LTD. | Unitedkingdom | Moorgate | 1 Bow Churchyard | London | EC4M 9DQ | N/A | 2019 | $235,699,830 | 79 | N/A | N/A | N/A |
| 81 | Ceb Holdings UK 2 LIMITED | Unitedkingdom | Canary Wharf | C/o Corporation Service Company UK Limited | London | E14 5HU | N/A | 2012 | $222,919,501 | 17 | N/A | N/A | N/A |
| 82 | Horizon Bidco LIMITED | Unitedkingdom | Saint Johns Wood | 10 Back Hill | London | EC1R 5EN | N/A | 2015 | $222,360,397 | 552 | N/A | N/A | N/A |
| 83 | Kistos Holdings PLC | Unitedkingdom | London | 2nd Floor | London | SW1Y 4JU | N/A | 2022 | $221,512,000 | 47 | N/A | N/A | N/A |
| 84 | Industrial Investments Holdings LIMITED | Unitedkingdom | Blaby | Zest Recruitment Group Ltd | Leicestershire | LE8 4EZ | N/A | 2022 | $221,444,814 | 406 | N/A | N/A | N/A |
| 85 | Newton Group Holdings LIMITED | Unitedkingdom | Abingdon | 2 Kingston Business Park | Oxfordshire | OX13 5FE | N/A | 2021 | $218,717,963 | 731 | N/A | N/A | N/A |
| 86 | The Capital Markets Company (UK) LIMITED | Unitedkingdom | Clapton | 77-79 Great Eastern Street | London | EC2A 3HU | capco.***** | 2012 | $217,707,108 | 1,383 | N/A | N/A | N/A |
| 87 | Drw UK Partners Llp | Unitedkingdom | City of London | The Leadenhall Building | London | EC3V 4AB | N/A | 2010 | $217,012,049 | 324 | N/A | N/A | N/A |
| 88 | Newton Consulting LIMITED | Unitedkingdom | Abingdon | 2 Kingston Business Park | Oxfordshire | OX13 5FE | N/A | 2001 | $214,997,603 | 650 | N/A | N/A | N/A |
| 89 | One Thousand Trades Events LIMITED | Unitedkingdom | Aston | Grosvenor House | Birmingham, West Midlands | B3 1RB | N/A | 2025 | $211,709,491 | 3,969 | N/A | N/A | N/A |
| 90 | Est (holdings) LIMITED | Unitedkingdom | Saint Johns Wood | 223-231 Pentonville Road | London | N1 9NG | N/A | 2014 | $210,941,309 | 502 | N/A | N/A | N/A |
| 91 | Caci LIMITED | Unitedkingdom | Shepherd'S Bush | C A C I House | London | W14 8TS | caci.***** | 1982 | $209,762,301 | 1,190 | N/A | N/A | N/A |
| 92 | Barnett Waddingham Llp | Unitedkingdom | Moorgate | Barnett Waddingham Llp | London | EC2Y 5AU | barnett-waddingham.***** | 1989 | $197,866,373 | 1,571 | N/A | N/A | N/A |
| 93 | New Holland LIMITED | Unitedkingdom | Basildon | Cranes Farm Road | Essex | SS14 3AD | newholland.***** | 1991 | $197,093,930 | 164 | N/A | N/A | N/A |
| 94 | Urban Logistics Holdings LIMITED | Unitedkingdom | Marylebone | 1 Curzon Street | London | W1J 5HB | N/A | 2015 | $194,516,493 | 14 | N/A | N/A | N/A |
| 95 | Frp Advisory Group PLC | Unitedkingdom | Moorgate | 110 Cannon Street | London | EC4N 6EU | frpadvisory.***** | 2019 | $192,233,318 | 700 | N/A | N/A | N/A |
| 96 | H H Associates LIMITED | Unitedkingdom | Leatherhead | Grove House | Surrey | KT22 9DF | hhglobal.***** | 1983 | $191,359,095 | 559 | N/A | N/A | N/A |
| 97 | I45 LIMITED | Unitedkingdom | Marylebone | 1 Bickenhall Mansions | London | W1U 6BP | N/A | 2018 | $189,020,085 | 220 | N/A | N/A | N/A |
| 98 | Eb Brands LTD | Unitedkingdom | Pitsford | Unit 1 | Northamptonshire | NN6 9ER | N/A | 2019 | $186,210,103 | 1 | N/A | N/A | N/A |
| 99 | Fit Out (UK) Holdings LIMITED | Unitedkingdom | Harlesden | 27 Abbey Road | London | NW10 7SJ | fitoutuk.***** | 2006 | $183,525,042 | 303 | N/A | N/A | N/A |
| 100 | Interpath LTD | Unitedkingdom | Moorgate | 10 Fleet Place | London | EC4M 7RB | interpathadvisory.***** | 2021 | $183,352,274 | 617 | N/A | N/A | N/A |