| Cundalls (Rural) Limited | Professional & scientific | 2020 |
| Cundalls (Yorkshire) Limited | Real estate | 2010 |
| Cundalls Rfas Limited | Professional & scientific | 2011 |
| Curradi Limited | Hospitality | 2013 |
| Customcall Scarborough Ltd | Construction | 2002 |
| CW Business Holdings Ltd | Real estate | 2023 |
| CWC Platering & Tiling Specialists Ltd | Construction | 2026 |
| D & M Structural Services Ltd | Professional & scientific | 2000 |
| D Blaydes Joinery Ltd | Construction | 2025 |
| D G Ashley Limited | Construction | 2006 |
| D Gormley Developments Limited | Construction | 2006 |
| D J Developers Ltd | Real estate | 2019 |
| D P Leisure (Leeds) Limited | Wholesale & retail | 1996 |
| D R Installations Limited | Other services | 2020 |
| D Taylor Cladding Ltd | Construction | 2019 |
| D&G Catering Limited | Hospitality | 2025 |
| D.P. International Tours Limited | Administrative & support | 1978 |
| D.U.K.E. Combined Limited Partnership | | 2004 |
| DA Accountants Limited | Professional & scientific | 2023 |
| Daisybridge Limited | Hospitality | 2002 |
| DAJ PUB Company Ltd | Hospitality | 2024 |
| Dakk Engineering Limited | Manufacturing | 2013 |
| Dalby Activity Centre Ltd | Arts & recreation | 2017 |
| Dale Erskine Power Solutions Limited | Financial services | 2012 |
| Dale Farm Leisure Ltd | Real estate | 2025 |
| Dale Power Solutions Limited | Manufacturing | 1968 |
| Dale Property Investments (Scarborough) Ltd | Real estate | 2021 |
| Dales Family Properties LLP | | 2025 |
| Dales Fine Foods Limited | Wholesale & retail | 2020 |
| Dales Fruit & VEG Ltd | Wholesale & retail | 2024 |
| Dales Topco Ltd | Financial services | 2024 |
| Damion Chew Design Limited | Professional & scientific | 2011 |
| Damp Tech Property Preservation Limited | Construction | 2019 |
| Dane Developments Limited | Construction | 2004 |
| Danjam Ltd | Real estate | 2019 |
| Danny Dack Travel Ltd | Administrative & support | 2026 |
| Darach Enterprises Limited | Wholesale & retail | 2026 |
| Darita Services Limited | Construction | 2018 |
| Darnholm Holdings Limited | Real estate | 2014 |
| Darren Howes Autoservices Limited | Wholesale & retail | 2016 |
| David Duggleby Limited | Administrative & support | 2002 |
| David&Cornel Limited | Transport & logistics | 2025 |
| Davies and Begbie Ltd | Manufacturing | 2005 |
| DAW Management Services Ltd | Professional & scientific | 2026 |
| Dawnay Estates Limited | Real estate | 2002 |
| Dawud(Uk) Limited | Wholesale & retail | 2025 |
| DB EX Inspection Electrical Commissioning Ltd | Construction | 2014 |
| Dbes (Yorkshire) Ltd | Construction | 2025 |
| DC Stubley Limited | Hospitality | 2026 |
| Dccdmw Ltd | Hospitality | 2024 |
| DE Jong Medical Limited | Health & social care | 2014 |
| DE Readman Farriery Limited | Agriculture & fishing | 2012 |
| Dean Road Local Ltd | Wholesale & retail | 2025 |
| Dean's Fishers Scarborough Ltd | Hospitality | 2024 |
| Debra Moore Associates Limited | Extraterritorial | 2008 |
| Decca Properties Ltd | Real estate | 2021 |
| Deckard Associates Ltd | Extraterritorial | 2017 |
| Decrow 2025 Limited | Financial services | 2025 |
| Decrow Ltd | Financial services | 2022 |
| Deepdale Developments Ltd | Real estate | 2020 |
| Deepdale Estates Management Ltd | Extraterritorial | 2015 |
| Deepdale Holdings (Scarborough) Limited | Financial services | 2022 |
| Deepdale Properties (Yorkshire) Limited | Real estate | 1995 |
| Deerstone Windows Ltd | Construction | 2021 |
| Delvatech Limited | Wholesale & retail | 2025 |
| Delverne Flats Management Limited | Households | 2000 |
| Dendislear Health Ltd | Health & social care | 2023 |
| Dendislear Holdings Ltd | Financial services | 2026 |
| Dendislear Rentals Ltd | Real estate | 2026 |
| Dene LEA Management Company Limited | Households | 2021 |
| Dent Excel UK Ltd | Wholesale & retail | 2002 |
| Dental Equipment Solutions Ltd | Manufacturing | 2026 |
| Derek Lancaster Management Services Limited | Professional & scientific | 2014 |
| Derwent Carers Limited | Health & social care | 2006 |
| Derwent Dale Limited | Real estate | 2016 |
| Derwent House Ltd | Extraterritorial | 2022 |
| Derwent House Management Company Limited | Households | 2021 |
| Derwentdale Farming | Administrative & support | 2011 |
| DES Winks Cars Limited | Wholesale & retail | 1986 |
| Desi and Continental Foods Limited | Wholesale & retail | 2023 |
| Design 4 Architecture Limited | Professional & scientific | 2007 |
| Designed by Rhianne Ltd | Professional & scientific | 2024 |
| Designwarm Limited | Real estate | 1992 |
| Desire Corporation Limited | Information & communication | 2013 |
| Destiny Cycles Ltd | Manufacturing | 2025 |
| Develop HR Limited | Administrative & support | 2025 |
| Dexters Surf Limited | Arts & recreation | 2020 |
| Dfhartley Limited | Real estate | 2026 |
| Dhaliwal Medics Ltd | Real estate | 2023 |
| Dhaliwal Strategic Holdings Ltd | Financial services | 2025 |
| DHP Properties Limited | Real estate | 2003 |
| DI Wilson Ltd | Professional & scientific | 2005 |
| Dial a Ride (Scarborough & District) | Transport & logistics | 2004 |
| Diggers Cafe Ltd | Hospitality | 2025 |
| Digivee Limited | Wholesale & retail | 2023 |
| Dinefreefrom Limited | Hospitality | 2015 |
| Dissent Limited | Wholesale & retail | 2013 |
| Dixonway Estates Ltd | Construction | 2006 |
| DJM Networks Limited | Construction | 2011 |
| DM Gaming Ltd | Arts & recreation | 2025 |