| Chem Arrow Europe Limited | Gerrards Cross | 2013 |
| Chem Care Solutions Ltd | Ormskirk | 2009 |
| Chem Research Ltd | Edinburgh | 2025 |
| Chem Resist Group Limited | Ravensthorpe Industrial Estate | 1979 |
| Chem Superweld Private Limited | Hitchin | 2023 |
| Chem-Oil Engineering Limited | Tarporley | 2005 |
| Chem-Resist (N.E.) Limited | Dewsbury, | 1973 |
| Chem-Resist Plastic Fabrications Limited | Dewsbury | 1961 |
| Chem-Trend (UK) Limited | Huddersfield | 1996 |
| Chemandy Electronics Limited | Uckfield | 2012 |
| Chemanglia Limited | Fakenham | 2010 |
| Chemassist International Limited | London | 2017 |
| Chemclean Limited | Middlewich | 2024 |
| Chemco International Limited | Coatbridge | 1990 |
| Chemcolloids Limited | Congleton | 1990 |
| Chemcreator Limited | London | 2024 |
| Chemeco UK Ltd | Bristol | 2018 |
| Chemelex (UK) Limited | Washington | 1999 |
| Chemence Graphics (Holdings) Limited | Corby | 2014 |
| Chemence Graphics Nelson Limited | Corby | 2012 |
| Chemence Graphics Pollington Limited | Corby | 1984 |
| Chemence Graphics UK Limited | Northampton | 1978 |
| Chemence Limited | London | 1983 |
| Chemeos Limited | Warrington | 2024 |
| Chemex (North West) Limited | Frodsham | 2003 |
| Chemfeed Limited | Gravesend | 2014 |
| Chemfix Products Limited | West Yorkshire | 2001 |
| Chemglass Limited | Burnley | 1992 |
| Chemiaa UK Ltd | London | 2023 |
| Chemial UK Limited | Cheddleton | 2008 |
| Chemian Technology Limited | County Durham | 1995 |
| Chemibuild Ltd | Bradford | 2022 |
| Chemical and Water Technology Limited | London | 2021 |
| Chemical Lane Engineering Ltd | Stafford | 2026 |
| Chemical Process Solutions Limited | Seaham | 2001 |
| Chemical Processing Services Limited | Wigan | 1965 |
| Chemical Storage Solutions Limited | Bristol | 2009 |
| Chemical Support Systems Limited | Winsford | 1990 |
| Chemicals & Process Equipment Limited | Warmley | 1986 |
| Chemicals Limited | Cheadle | 1986 |
| Chemicalxr Ltd | London | 2024 |
| Chemiclean Products Limited | Newcastle Under Lyme | 2005 |
| Chemico Sales and Overseas Limited | Teignmouth | 1966 |
| Chemidex Pharma Limited | Egham | 1982 |
| Chemifloc (UK) Limited | London | 1983 |
| Chemify Limited | Glasgow | 2019 |
| Chemigrahic Limited | London | 2026 |
| Chemigraphic Limited | Crawley | 1972 |
| Chemimed Healthcare Limited | Edgware | 2017 |
| Chemipat Limited | Salford | 1976 |
| Chemiphase Distribution Ltd | Ormskirk | 2023 |
| Chemiphase International Limited | Ormskirk | 2010 |
| Chemiphase OIL and GAS Ltd | Burscough | 2017 |
| Chemique Adhesives and Sealants Limited | Aldridge | 1985 |
| Chemique UK Limited | Walsall | 2014 |
| Chemique US Limited | Walsall | 2014 |
| Chemisphere UK Limited | Manchester | 1986 |
| Chemix Ltd | North Walsham | 2014 |
| Chemko Ltd | Berkeley | 2023 |
| Chemnovatic UK Ltd | Wolverhampton | 2022 |
| Chemodyn Ltd | Carmarthen | 2024 |
| Chemoil Products Limited | Fairground Way, Walsall | 1990 |
| Chemove Limited | Northwood | 2001 |
| Chemoxy International Limited | Middlesbrough | 1939 |
| Chemplus Ltd | York | 2014 |
| Chemprint Limited | Southport | 2007 |
| Chemquip Limited | High Peak | 1980 |
| Chemring Countermeasures Limited | Romsey | 1926 |
| Chemross Lifesciences Limited | Cardiff | 2023 |
| Chemsense Ltd | Borehamwood | 2022 |
| Chemsmart Limited | Ilford | 2025 |
| Chemstore (UK) Limited | London | 2013 |
| Chemsure Ltd | Winsford | 2022 |
| Chemtec Solutions Ltd | Birmingham | 2009 |
| Chemtec UK Limited | Beith | 2004 |
| Chemtech Industries Limited | Eastleigh | 1988 |
| Chemtech International Limited | Eastleigh | 1991 |
| Chemtech Services Limited | Nottingham | 1999 |
| Chemvac Pumps Limited | Macclesfield | 1984 |
| Chemviron Carbon Limited | Ashton-In-Makerfield | 1987 |
| Chen Chem Limited | Beckenham | 2024 |
| Chenab Foods Ltd | Bolton | 2016 |
| Cheneler Products Limited | Atherstone | 1986 |
| Chenergy Ltd | Downpatrick | 2025 |
| Cheng Trade Ltd | Glasgow | 2024 |
| Cheng YU Co., Ltd | London | 2023 |
| Chengguang Trading Co., Ltd | Cardiff | 2021 |
| Chengxin Jewelry Arts&Crafts Co., Limited | Beckenham | 2023 |
| Chenhongjunjkg Ltd | Lisburn | 2024 |
| Chenjinhong Ltd | Haverfordwest | 2024 |
| Chenjunhua Limited | Belfast | 2024 |
| Chenmin Technology Co. , Ltd | Kington | 2024 |
| Chenxiaowen Trade Ltd | Belfast | 2023 |
| Chenxin Refractories Co., Ltd | Cambridge | 2022 |
| Chenxing Corporation Limited | West Midlands, England | 2024 |
| Cheoanor Ltd | Manchester | 2020 |
| Chepstow Access Ltd | Chepstow | 2012 |
| Chepstow Art Space Limited | Chepstow | 2023 |
| Chepstow Campers and Builders Limited | Chepstow | 2025 |
| Chequer Barn Holdings Ltd | Ripon | 2025 |