| 1 | Rwe Supply & Trading GMBH | Unitedkingdom | Grange Park | Windmill Hill Business Park | Swindon | SN5 6PB | rwe.***** | 2003 | $67,757,424,256 | 1,686 | N/A | N/A | N/A |
| 2 | Johnson Matthey PLC | Unitedkingdom | Moorgate | 5th Floor | London | EC2V 7AD | matthey.***** | 1891 | $14,767,434,890 | 10,644 | N/A | N/A | N/A |
| 3 | Evraz PLC | Unitedkingdom | Marylebone | Portman House | London | W1H 6DU | evraz.***** | 2011 | $13,486,000,000 | 51,961 | N/A | N/A | N/A |
| 4 | Metlen Energy & Metals S.A. UK Branch | Unitedkingdom | Clapton | 4th Floor | London | EC1V 1LR | N/A | 2020 | $5,969,302,336 | 3,216 | N/A | N/A | N/A |
| 5 | Tata Steel UK LIMITED | Unitedkingdom | London | 18 Grosvenor Place | London | SW1X 7HS | tata.***** | 1907 | $2,841,156,310 | 7,130 | N/A | N/A | N/A |
| 6 | Black & Decker LIMITED BV | Unitedkingdom | Brackmills | C/o Stanley Black & Decker Caswell Road | Northamptonshire | NN4 7PW | blackanddecker.***** | 2018 | $2,274,240,064 | 378 | N/A | N/A | N/A |
| 7 | Caterpillar (U.K.) LIMITED | Unitedkingdom | Thurlaston | Peckleton Lane | Leicestershire | LE9 9JT | caterpillar.***** | 1950 | $1,992,903,732 | 2,439 | N/A | N/A | N/A |
| 8 | Rolls-Royce Submarines LIMITED | Unitedkingdom | Spondon | Atlantic House | Derby | DE21 7BE | rolls-royce.***** | 1959 | $1,750,610,529 | 4,834 | N/A | N/A | N/A |
| 9 | British Steel LIMITED | Unitedkingdom | Scunthorpe | Brigg Road | North Lincolnshire | DN16 1XA | britishsteel.***** | 2019 | $1,570,137,909 | 4,271 | N/A | N/A | N/A |
| 10 | Hill & Smith PLC | Unitedkingdom | Cheswick Green | Westhaven House | Solihull, West Midlands | B90 4LH | hsholdings.***** | 1960 | $1,083,994,878 | 4,631 | N/A | N/A | N/A |
| 11 | Minmetals (U.K) LIMITED | Unitedkingdom | Paddington | Mimet House | London | W2 1NJ | minmetals.***** | 1985 | $1,034,608,019 | 10 | N/A | N/A | N/A |
| 12 | Marcegaglia Stainless Sheffield LTD | Unitedkingdom | Wincobank | Europa Link | Sheffield, South Yorkshire | S9 1TZ | marcegaglia.***** | 2022 | $841,767,469 | 431 | N/A | N/A | N/A |
| 13 | 7 Steel (UK) Holdings LIMITED | Unitedkingdom | Llanedeyrn | Building 58 | Cardiff | CF24 5NN | brc.***** | 2003 | $825,328,182 | 1,790 | N/A | N/A | N/A |
| 14 | Portakabin LIMITED | Unitedkingdom | Towthorpe | New Lane | York | YO32 9PT | portakabin.***** | 1961 | $784,413,733 | 2,220 | N/A | N/A | N/A |
| 15 | Marubeni-Itochu Steel Europe GMBH | Unitedkingdom | City of London | The Broadgate Tower 15f | London | EC2A 2EW | N/A | 2001 | $780,725,040 | 46 | N/A | N/A | N/A |
| 16 | Nov Downhole Eurasia LIMITED | Unitedkingdom | Stonehouse | Stonedale Road | Gloucestershire | GL10 3RQ | nov.***** | 1997 | $767,650,000 | 1,648 | N/A | N/A | N/A |
| 17 | 7 Steel Manufacturing (UK) LIMITED | Unitedkingdom | Llanedeyrn | Building 58 Castle Works | Cardiff | CF24 5NN | brc.***** | 2002 | $631,812,916 | 851 | N/A | N/A | N/A |
| 18 | 7 Steel (UK) LIMITED | Unitedkingdom | Llanedeyrn | Building 58 Castle Works | Cardiff | CF24 5NN | brc.***** | 2003 | $622,956,995 | 5 | N/A | N/A | N/A |
| 19 | Bosch Thermotechnology LTD | Unitedkingdom | Warndon | Cotswold Way | Worcestershire | WR4 9SW | worcester-bosch.***** | 1986 | $615,079,306 | 1,540 | N/A | N/A | N/A |
| 20 | Cleveland Cable Company LIMITED | Unitedkingdom | Riverside Park Industrial Estate | Riverside Park Road | Middlesbrough | TS2 1QW | clevelandcable.***** | 1978 | $576,556,126 | 582 | N/A | N/A | N/A |
| 21 | Severfield PLC | Unitedkingdom | Thirsk | Ind Estate | North Yorkshire | YO7 3JN | severfield.***** | 1983 | $570,398,181 | 1,964 | N/A | N/A | N/A |
| 22 | Novelis UK LTD | Unitedkingdom | Latchford | Latchford Locks | Warrington | WA4 1NN | novelis.***** | 1933 | $509,409,733 | 320 | N/A | N/A | N/A |
| 23 | Liberty Speciality Steels LTD | Unitedkingdom | Rotherhithe | C/o Liberty Speciality Steels | London | SE1 2RE | libertysteelscunthorpe.***** | 1992 | $486,057,796 | 1,975 | N/A | N/A | N/A |
| 24 | Ideal Boilers LIMITED | Unitedkingdom | Bransholme | National Avenue | City of Kingston-upon-hull | HU5 4JB | idealboilers.***** | 1936 | $467,345,818 | 1,068 | N/A | N/A | N/A |
| 25 | Warrington Garages LIMITED | Unitedkingdom | Pickering | Hatfields | North Yorkshire | YO18 7JX | N/A | 1986 | $458,505,921 | 344 | N/A | N/A | N/A |
| 26 | Killinchy Aerospace Holdings LIMITED | Unitedkingdom | Durden Court | Lower Road | Buckinghamshire | UB9 5AJ | martin-baker.***** | 1966 | $440,031,242 | 1,327 | N/A | N/A | N/A |
| 27 | Baxi Heating UK LIMITED | Unitedkingdom | Warwick | Brooks House | Warwickshire | CV34 4LL | baxi.***** | 1866 | $433,630,997 | 1,280 | N/A | N/A | N/A |
| 28 | Ball Beverage Packaging UK LTD | Unitedkingdom | Gretton | Unit 4 Maynard Road | Northamptonshire | NN15 5ZS | ball.***** | 1880 | $421,558,028 | 500 | N/A | N/A | N/A |
| 29 | Liberty Steel Newport LIMITED | Unitedkingdom | Bishton | Corporation Road | Newport | NP19 4XE | libertyhouseuk.***** | 2008 | $419,644,380 | 187 | N/A | N/A | N/A |
| 30 | Martin-Baker Aircraft Company LIMITED | Unitedkingdom | Durden Court | Martin-baker Aircraft Co Ltd | Buckinghamshire | UB9 5AJ | martin-baker.***** | 1934 | $411,807,483 | 1,140 | N/A | N/A | N/A |
| 31 | Steel & Alloy Processing LIMITED | Unitedkingdom | West Bromwich | Trafalgar Works | Sandwell, West Midlands | B70 6BZ | steelalloy.***** | 1968 | $392,407,652 | 237 | N/A | N/A | N/A |
| 32 | Stelrad Group PLC | Unitedkingdom | Newcastle Upon Tyne | 69-75 Side | Newcastle Upon Tyne, Tyne and Wear | NE1 3JE | stelrad.***** | 2021 | $368,359,233 | 1,435 | N/A | N/A | N/A |
| 33 | Sonoco Metal Packaging UK LIMITED | Unitedkingdom | Wisbech | Eviosys Packaging UK Ltd | Cambridgeshire | PE13 2RP | crowncork.***** | 2021 | $366,608,941 | 419 | N/A | N/A | N/A |
| 34 | Eriks Industrial Services LIMITED | Unitedkingdom | Oldbury | Seven Stars Road | Sandwell, West Midlands | B69 4JR | eriks.***** | 1940 | $359,011,919 | 1,406 | N/A | N/A | N/A |
| 35 | Leoni Wiring Systems U.K. LIMITED | Unitedkingdom | Newcastle-under-lyme | Lower Milehouse Lane | Staffordshire | ST5 9BT | leoni.***** | 1916 | $357,294,332 | 339 | N/A | N/A | N/A |
| 36 | Metal Improvement Company LLC | Unitedkingdom | Newbury | European Corporate Office | West Berkshire | RG14 5TU | metalimprovement.***** | 1971 | $347,878,889 | 403 | N/A | N/A | N/A |
| 37 | B.E. Wedge Holdings LIMITED | Unitedkingdom | Willenhall | Stafford Street | Walsall, West Midlands | WV13 1RZ | wedge-galv.***** | 1938 | $332,659,430 | 1,351 | N/A | N/A | N/A |
| 38 | Eaton LIMITED | Unitedkingdom | Park Gate | Abbey Park, Southampton Road | Hampshire | PO14 4QA | eaton.***** | 1911 | $330,765,210 | 1,296 | N/A | N/A | N/A |
| 39 | Lawton Tube Company Limited(the) | Unitedkingdom | Aldermans Green | Torrington Avenue | Coventry, West Midlands | CV4 9AB | lawtontubes.***** | 1918 | $319,651,262 | 133 | N/A | N/A | N/A |
| 40 | Timet UK LIMITED | Unitedkingdom | Holford | The Hub | Birmingham, West Midlands | B6 7BJ | timet.***** | 1954 | $309,250,495 | 538 | N/A | N/A | N/A |
| 41 | 01198171 LIMITED | Unitedkingdom | Prescot | Hall la | Knowsley, Merseyside | L34 5GG | N/A | 1975 | $305,127,662 | 4,000 | N/A | N/A | N/A |
| 42 | Johnson Matthey Precious Metals LIMITED | Unitedkingdom | Moorgate | 5th Floor | London | EC2V 7AD | matthey.***** | 1998 | $304,505,000 | 50 | N/A | N/A | N/A |
| 43 | Trifast PLC | Unitedkingdom | Shelfield | National Distribution Centre | Walsall, West Midlands | WS2 8DQ | trfastenings.***** | 1985 | $282,681,138 | 1,176 | N/A | N/A | N/A |
| 44 | Mueller Europe LIMITED | Unitedkingdom | Bilston | Oxford Street | Wolverhampton, West Midlands | WV14 7DS | wednesburytube.***** | 1997 | $272,155,343 | 232 | N/A | N/A | N/A |
| 45 | Smith Brothers Stores LIMITED | Unitedkingdom | Peterborough | Empson Road | Peterborough | PE1 5UP | sbs.***** | 1969 | $267,665,516 | 542 | N/A | N/A | N/A |
| 46 | Sandvik LIMITED | Unitedkingdom | Coseley | Manor Way | Dudley, West Midlands | B62 8QZ | smt.***** | 1914 | $263,594,827 | 561 | N/A | N/A | N/A |
| 47 | Bridgnorth Aluminium LIMITED | Unitedkingdom | Quatford | Stourbridge Road | Shropshire | WV15 6AU | bridgnorthaluminium.***** | 2001 | $261,867,268 | 316 | N/A | N/A | N/A |
| 48 | Altrad Integrity Services LIMITED | Unitedkingdom | Clinterty | Norfolk House | Aberdeen City | AB21 0DP | stork.***** | 1975 | $260,395,229 | 1,850 | N/A | N/A | N/A |
| 49 | Victaulic Europe BV | Unitedkingdom | Stevenage | Unit B1-b2 | Hertfordshire | SG1 2NB | victaulic.***** | 2005 | $257,996,968 | 107 | N/A | N/A | N/A |
| 50 | Sertec CORPORATION LIMITED | Unitedkingdom | Water Orton | Wincaster House | Warwickshire | B46 1JU | N/A | 2016 | $257,382,056 | 1,488 | N/A | N/A | N/A |
| 51 | Howco Group PLC | Unitedkingdom | Drumchapel | 2nd Floor Fountain House | Glasgow City | G3 7UL | howcogroup.***** | 1982 | $244,420,626 | 401 | N/A | N/A | N/A |
| 52 | Ecobat Resources UK LIMITED | Unitedkingdom | Matlock | Darley Dale Smelter | Derbyshire | DE4 2LP | hjenthoven.***** | 1994 | $241,944,716 | 388 | N/A | N/A | N/A |
| 53 | William King LIMITED | Unitedkingdom | West Bromwich | Atlas Centre | Sandwell, West Midlands | B70 9DR | williamking.***** | 1820 | $236,650,963 | 225 | N/A | N/A | N/A |
| 54 | William Hare LIMITED | Unitedkingdom | Bradley Fold | Brandlesholme House | Manchester, Greater Manchester | BL8 1JJ | hare.***** | 1930 | $231,241,114 | 796 | N/A | N/A | N/A |
| 55 | Metalor Technologies (UK) LTD | Unitedkingdom | Aston | 74 Warstone Lane | Birmingham, West Midlands | B18 6NG | metalor.***** | 1980 | $229,139,437 | 226 | N/A | N/A | N/A |
| 56 | Kaye Aluminium (holdings) LIMITED | Unitedkingdom | Long Sandall | Ogden Road Wheatley Hills | Doncaster, South Yorkshire | DN2 4SG | kayebuildingsystems.***** | 2004 | $227,006,026 | 387 | N/A | N/A | N/A |
| 57 | Castings Public LIMITED Company | Unitedkingdom | Brownhills | Lichfield Road | Walsall, West Midlands | WS8 6JZ | castings.***** | 1907 | $223,863,130 | 1,178 | N/A | N/A | N/A |
| 58 | A.J.N. Steelstock LTD. | Unitedkingdom | Newmarket | Icknield Way | Suffolk | CB8 7QT | ajnsteelstock.***** | 1961 | $220,555,301 | 430 | N/A | N/A | N/A |
| 59 | Arconic Manufacturing (gb) LIMITED | Unitedkingdom | Kitts Green | 170 Kitts Green Road | Birmingham, West Midlands | B33 9SB | arconic.***** | 1959 | $219,611,876 | 459 | N/A | N/A | N/A |
| 60 | Hall & Pickles 1812 LIMITED | Unitedkingdom | Higher Poynton | Poynton Industrial Estate | Cheshire East | SK12 1NB | hallandpickles.***** | 1812 | $214,487,765 | 428 | N/A | N/A | N/A |
| 61 | Crown Packaging Manufacturing UK LIMITED | Unitedkingdom | Durranhill | Borland Avenue | Cumbria | CA1 2TL | crowncork.***** | 2016 | $214,399,254 | 694 | N/A | N/A | N/A |
| 62 | Canpack UK LIMITED | Unitedkingdom | Old Crosby | 18 Holyrood Drive | North Lincolnshire | DN15 8NN | can-pack.***** | 2007 | $210,131,120 | 255 | N/A | N/A | N/A |
| 63 | Kohler Showers Holdings LIMITED | Unitedkingdom | Swindon Village | Whaddon Works | Gloucestershire | GL52 5EP | daryl-showers.***** | 2000 | $206,208,760 | 748 | N/A | N/A | N/A |
| 64 | Jubilee Metals Group PLC | Unitedkingdom | South Kensington | Jubilee Platinum Plc | London | SW7 3HG | N/A | 2002 | $205,404,178 | 893 | N/A | N/A | N/A |
| 65 | Hydro Aluminium UK LIMITED | Unitedkingdom | Blackwell | Sawpit Lane | Derbyshire | DE55 5NH | hydro.***** | 1969 | $203,284,823 | 641 | N/A | N/A | N/A |
| 66 | Amari Metals Engineering Group LIMITED | Unitedkingdom | Wednesbury | Parkway House, Unit 6 Parkway Industrial Estate | Sandwell, West Midlands | WS10 7WP | themetalcentre.***** | 2022 | $202,323,380 | 579 | N/A | N/A | N/A |
| 67 | Manoir Industries SA | Unitedkingdom | Hanbury Woodend | Bretby Business Park | Staffordshire | DE15 0YZ | N/A | 1990 | $201,704,738 | 3 | N/A | N/A | N/A |
| 68 | Cyient Europe LIMITED | Unitedkingdom | Reading | Apex Plaza | Reading | RG1 1AX | cyient.***** | 1992 | $200,137,641 | 1,053 | N/A | N/A | N/A |
| 69 | Kohler Mira LIMITED | Unitedkingdom | Swindon Village | Whaddon Works | Gloucestershire | GL52 5EP | kohler.***** | 1930 | $197,790,084 | 731 | N/A | N/A | N/A |
| 70 | Wilkinson Sword LIMITED | Unitedkingdom | Marylebone | Wogan House | London | W1W 7NY | N/A | 1772 | $194,218,251 | 377 | N/A | N/A | N/A |
| 71 | Howmet LIMITED | Unitedkingdom | Newport Park | Kestrel Way | Devon | EX2 7LG | howmet.***** | 1972 | $187,716,850 | 548 | N/A | N/A | N/A |
| 72 | Safestyle UK PLC | Unitedkingdom | Saint Helier | 2nd Floor | Saint Helier | JE2 3QA | N/A | 2013 | $185,669,802 | 805 | N/A | N/A | N/A |
| 73 | Brc LIMITED | Unitedkingdom | Bishton | Corporation Road | Newport | NP19 4RD | brc.***** | 1908 | $182,405,791 | 334 | N/A | N/A | N/A |
| 74 | Hy-Ten LIMITED | Unitedkingdom | Richmond | 12 the Green | London | TW9 1PX | hy-ten.***** | 1958 | $180,400,962 | 306 | N/A | N/A | N/A |
| 75 | Indometal (london) LIMITED | Unitedkingdom | Clapton | 326a City Road | London | EC1V 2NZ | dimah.***** | 1988 | $180,284,516 | 6 | N/A | N/A | N/A |
| 76 | Special Metals Wiggin LIMITED | Unitedkingdom | Hereford | Holmer Road | County of Herefordshire | HR4 9SL | specialmetalswiggin.***** | 1835 | $178,004,000 | 493 | N/A | N/A | N/A |
| 77 | Euroclad Group LIMITED | Unitedkingdom | Llanrumney | Wentloog | Cardiff | CF3 1TH | eurocladgroup.***** | 1980 | $177,982,205 | 324 | N/A | N/A | N/A |
| 78 | Tandom Metallurgical Group LIMITED | Unitedkingdom | Congleton | Radnor Park Industrial Estate | Cheshire East | CW12 4XE | tandom.***** | 2008 | $176,960,798 | 149 | N/A | N/A | N/A |
| 79 | Verallia UK LIMITED | Unitedkingdom | Collingham | 69 South Accommodation Road | Leeds, West Yorkshire | LS10 1NQ | allied-glass.***** | 1999 | $176,053,141 | 431 | N/A | N/A | N/A |
| 80 | Ardagh Metal Packaging UK LIMITED | Unitedkingdom | Chester | First Floor, Knights Court | Cheshire West and Chester | CH1 2BQ | N/A | 1990 | $173,811,621 | 638 | N/A | N/A | N/A |
| 81 | Rom LIMITED | Unitedkingdom | Lichfield | Trent Valley | Staffordshire | WS13 6RN | rom.***** | 1926 | $170,734,173 | 377 | N/A | N/A | N/A |
| 82 | Rolls-Royce Power Engineering LIMITED | Unitedkingdom | Derby | Po Box 31 | Derby | DE24 8BJ | rolls-royce.***** | 1977 | $169,760,708 | 504 | N/A | N/A | N/A |
| 83 | S.J.M. Alloys & Metals LIMITED | Unitedkingdom | Loughton | First Floor, 11 Loughton Business Centre | Essex | IG10 3FL | sjmalloysandmetals.***** | 1993 | $169,666,841 | 30 | N/A | N/A | N/A |
| 84 | Amg Chrome LIMITED | Unitedkingdom | Rotherham | Fullerton Road | Rotherham, South Yorkshire | S60 1DL | opticalsurface.***** | 1938 | $166,626,000 | 204 | N/A | N/A | N/A |
| 85 | Enermech LIMITED | Unitedkingdom | Northfield | Enermech House | Aberdeen City | AB16 7AG | enermech.***** | 2010 | $163,557,201 | 1,041 | N/A | N/A | N/A |
| 86 | Express Reinforcements LIMITED | Unitedkingdom | Neath | Eaglesbush Works | Neath Port Talbot | SA11 1NJ | expressreinforcements.***** | 1984 | $155,039,064 | 319 | N/A | N/A | N/A |
| 87 | Gripple LIMITED | Unitedkingdom | Deepcar | The Old West Gun Works | Sheffield, South Yorkshire | S4 7UQ | gripple.***** | 1989 | $153,730,720 | 956 | N/A | N/A | N/A |
| 88 | Darchem Engineering LIMITED | Unitedkingdom | Elton | Ironmasters Way | Stockton-on-tees | TS21 1LB | darchem.***** | 1993 | $153,386,733 | 754 | N/A | N/A | N/A |
| 89 | Seah Wind LTD. | Unitedkingdom | West Wimbledon | 13 Approach Road | London | SW20 8BA | N/A | 2021 | $152,516,606 | 97 | N/A | N/A | N/A |
| 90 | Elg Metals UK LIMITED | Unitedkingdom | Gildingwells | Templeborough Works | Rotherham, South Yorkshire | S9 1RT | elg.***** | 1980 | $152,057,414 | 267 | N/A | N/A | N/A |
| 91 | Tacle Seating UK LIMITED | Unitedkingdom | City of London | 13th Floor | London | EC2R 7HJ | N/A | 2004 | $151,614,922 | 211 | N/A | N/A | N/A |
| 92 | F. Brazil Reinforcements LIMITED | Unitedkingdom | Canvey Island | Romainville Way | Essex | SS8 0RB | fbrazilreinforcements.***** | 2007 | $151,571,108 | 167 | N/A | N/A | N/A |
| 93 | Rti International Metals LIMITED | Unitedkingdom | Tamworth | Titan House | Staffordshire | B78 2EX | arconic.***** | 1998 | $149,885,000 | 37 | N/A | N/A | N/A |
| 94 | Special Melted Products LIMITED | Unitedkingdom | Deepcar | President Way Works | Sheffield, South Yorkshire | S4 7UR | atimetals.***** | 1842 | $148,844,882 | 367 | N/A | N/A | N/A |
| 95 | Aalberts Integrated Piping Systems LIMITED | Unitedkingdom | New Edlington | St. Catherines Avenue | Doncaster, South Yorkshire | DN4 8DF | pegleryorkshire.***** | 1945 | $145,861,563 | 302 | N/A | N/A | N/A |
| 96 | Spartan UK LIMITED | Unitedkingdom | Gateshead | Ropery Road | Gateshead, Tyne and Wear | NE8 2RD | spartanuk.***** | 1984 | $145,628,896 | 120 | N/A | N/A | N/A |
| 97 | Forged Solutions Group LIMITED | Unitedkingdom | Matlock | Dale Road North | Derbyshire | DE4 2JB | alcoa.***** | 1919 | $145,579,333 | 444 | N/A | N/A | N/A |
| 98 | Voestalpine Metsec PLC | Unitedkingdom | Oldbury | Broadwell Road | Sandwell, West Midlands | B69 4HF | metsec.***** | 1981 | $144,696,422 | 383 | N/A | N/A | N/A |
| 99 | Wyman-Gordon LIMITED | Unitedkingdom | Livingston | Houstoun Road | West Lothian | EH54 5BZ | pccforgedproducts.***** | 1994 | $143,295,153 | 201 | N/A | N/A | N/A |
| 100 | Hadley Industries Holdings LIMITED | Unitedkingdom | Smethwick | Downing Street | Sandwell, West Midlands | B66 2PA | hadleygroup.***** | 1964 | $142,526,733 | 364 | N/A | N/A | N/A |