| Martyn Moon International Limited | Other services | 2007 |
| Matrix Consultancy (UK) Limited | Real estate | 2003 |
| Matthew Dixon Limited | Wholesale & retail | 2002 |
| Maytree Catering Limited | Hospitality | 2004 |
| Mcgrory Interim Management & Consultancy Limited | Administrative & support | 2006 |
| Medi-Food Partnership Limited | Administrative & support | 2006 |
| Melbourne Court Management Company Limited | Households | 1985 |
| Metallics UK Limited | Manufacturing | 2007 |
| Michael Barugh Steel Stockholding Limited | Wholesale & retail | 2000 |
| Michael Lawrence Limited | Wholesale & retail | 2003 |
| Mike Baker Plumbing & Heating Limited | Construction | 2004 |
| Mike Spivey Remedial Therapist Limited | Health & social care | 2003 |
| Mill View Place Management Company Limited | Households | 2003 |
| MMS Solutions (UK) Limited | Professional & scientific | 2005 |
| Motorway Hessle Limited | Wholesale & retail | 2003 |
| MP Electric (Driffield) Ltd | Other services | 2006 |
| Murphy Engineering Limited | Manufacturing | 2002 |
| N D Future Limited | Real estate | 1971 |
| N.C. Buckton Limited | Agriculture & fishing | 2007 |
| Natural GAS Services Training Group Limited | Financial services | 2024 |
| New Creations Hair Salon Limited | Other services | 2003 |
| Nicholas Belt (Estate Agency) Limited | Real estate | 1964 |
| Noisemeters Limited | Professional & scientific | 2003 |
| North British Securities Limited | Real estate | 1991 |
| Northern Labour Contractors Limited | Transport & logistics | 1996 |
| Novantae Limited | Agriculture & fishing | 2003 |
| Nutritionelle Limited | Manufacturing | 1983 |
| Opal Windows (Yorkshire) Limited | Construction | 2002 |
| Orchard Builders Limited | Construction | 2011 |
| Oriel Printing Co. Limited | Manufacturing | 1978 |
| Osbornehorbowsky Ltd | Professional & scientific | 2005 |
| P & D Skelton Limited | Wholesale & retail | 2006 |
| P K M Construction Limited | Construction | 2006 |
| P. a. Knight Builders Limited | Construction | 2007 |
| P. Blackburn Joinery Limited | Construction | 2006 |
| P. Tutton Limited | Health & social care | 2007 |
| P.D.R. Ltd. | Transport & logistics | 1999 |
| P.H.Hairsine & Sons Limited | Construction | 2005 |
| Paintwork by George Limited | Wholesale & retail | 2000 |
| Palmer Hunt Electrical Limited | Construction | 2007 |
| Pantheon Bars Limited | Hospitality | 2007 |
| Parkin Business Services Limited | Wholesale & retail | 2001 |
| Parmac Engineering Services Limited | Manufacturing | 2002 |
| PAT Lewis (UK) Limited | Manufacturing | 2003 |
| Pathbest Limited | Professional & scientific | 1978 |
| Patrick Traves Joinery Limited | Construction | 2005 |
| Paul Carter GAS Services Limited | Construction | 2003 |
| Paul Dilley Limited | Wholesale & retail | 2002 |
| Paul White Joinery Ltd | Construction | 2006 |
| Pdmc Packaging Limited | Transport & logistics | 2001 |
| Peak Physique H & F Limited | Arts & recreation | 2003 |
| Pears ARE Eternal Ltd | Real estate | 2024 |
| Perry's Empire Limited | Transport & logistics | 2005 |
| Peter Hall Violins Limited | Wholesale & retail | 1998 |
| Peter Winn Tyres Limited | Wholesale & retail | 1985 |
| Petrini Limited | Real estate | 2002 |
| PG Tennison Ltd | Administrative & support | 2007 |
| PGR Innovations Limited | Construction | 2005 |
| PH Renewables Limited | Construction | 2022 |
| Philip Bannister & Co. Limited | Real estate | 1998 |
| Phoenix Financial Consultancy Limited | Financial services | 2003 |
| Pickards Butchers Limited | Wholesale & retail | 2003 |
| Pink Nails Ltd | Other services | 2005 |
| Pittaway Special Coatings Limited | Manufacturing | 1978 |
| Plumbing to GAS Services Limited | Manufacturing | 2004 |
| Powerfast (Yorkshire) Limited | Wholesale & retail | 2001 |
| Premier Clad Limited | Construction | 2005 |
| Premier Event Marquees Company Limited | Extraterritorial | 2006 |
| Premier Specialist Construction Limited | Real estate | 2007 |
| Pressure Washer Solutions Ltd | Administrative & support | 2005 |
| Prime Fish Company(Newcastle)Limited(The) | Extraterritorial | 1948 |
| Pro Cricket Shop Limited | Wholesale & retail | 2005 |
| Prospect Photographic Agency Limited | Professional & scientific | 2003 |
| PWC Care (Thorn Hall) Limited | Health & social care | 2007 |
| Quantum Safety Limited | Professional & scientific | 2007 |
| Quick & Clarke (Hornsea) Limited | Real estate | 2006 |
| Quick & Clarke Limited | Real estate | 2003 |
| Qure Limited | Health & social care | 2002 |
| R & R Studio Limited | Professional & scientific | 2003 |
| R E Jackson Limited | Wholesale & retail | 2003 |
| R S Bodyshop Limited | Wholesale & retail | 2004 |
| R.A.O. Controls Limited | Manufacturing | 1999 |
| Radiopharmium Limited | Information & communication | 2024 |
| Rainbow Professional Limited | Manufacturing | 2004 |
| Read Family Group Limited | Financial services | 1987 |
| Reads Furnishings Limited | Wholesale & retail | 1973 |
| Regal 100 Limited | Wholesale & retail | 2006 |
| Rehearsal Rehearsal Limited | Professional & scientific | 2004 |
| Renlim Limited | Construction | 1984 |
| Ribworld Limited | Manufacturing | 2002 |
| Richardsons (Holdings) Limited | Wholesale & retail | 1997 |
| Richardsons Limited | Wholesale & retail | 1933 |
| Richardsons Old Town Bakery Limited | Manufacturing | 2003 |
| Right Car Holdings (UK) Limited | Wholesale & retail | 2012 |
| Right Car Ltd | Wholesale & retail | 2000 |
| RM Motorcycles UK Limited | Wholesale & retail | 2002 |
| Roadrunner (Hull) Limited | Wholesale & retail | 1997 |
| ROB Jones Education Limited | Information & communication | 2004 |
| Rodger Bentley (Power Equipment) Limited | Wholesale & retail | 1992 |
| Roger Madsen Limited | Agriculture & fishing | 2003 |