| Merseybears C.I.C. | Health & social care | 2026 |
| Merseybeat Accommodation Ltd | Hospitality | 2020 |
| Merseybeat Properties Ltd | Real estate | 2020 |
| Merseybeatz Entertainment Ltd | Information & communication | 2025 |
| Merseybev Ltd | Hospitality | 2024 |
| Merseybuild Developments Limited | | 1989 |
| Merseycare Children's Services Limited | Health & social care | 2024 |
| Merseycraft Joinery Ltd | Construction | 2025 |
| Merseye Botanics Ltd | Manufacturing | 2025 |
| Merseyfix Plumbing & Heating Ltd | Construction | 2025 |
| Merseyflush Ltd | Construction | 2024 |
| Merseygate Estates Limited | Real estate | 2024 |
| Merseygrid Limited | Education | 2000 |
| Merseyguard Security Ltd | Administrative & support | 2026 |
| Merseyhome Properties Ltd | Real estate | 2012 |
| Merseylec Electrical Services Ltd | Construction | 2021 |
| Merseylink Logistics Limited | Transport & logistics | 2026 |
| Merseymovers Ltd | Water & waste | 2025 |
| Merseypave 2023 Limited | Construction | 2023 |
| Merseypave Ltd | Construction | 2025 |
| Merseypoppins Ltd | Administrative & support | 2023 |
| Merseypro Cleaning Services Limited | Administrative & support | 2026 |
| Merseyrail Electrics 2002 Limited | Transport & logistics | 2002 |
| Merseyshine Auto Care Ltd | Wholesale & retail | 2026 |
| Merseyside Academy of Drama Limited | Education | 2012 |
| Merseyside Accounting Ltd | Professional & scientific | 2025 |
| Merseyside Air Conditioning Ltd | Construction | 2025 |
| Merseyside Alive Limited | Health & social care | 2012 |
| Merseyside Aquatic Warehouse Limited | Extraterritorial | 2018 |
| Merseyside Arts Foundation CIC | Arts & recreation | 2009 |
| Merseyside Autism and Speech Therapy Limited | Health & social care | 2016 |
| Merseyside Badminton Foundation | Arts & recreation | 2025 |
| Merseyside Building Services Ltd | Construction | 2015 |
| Merseyside Business Intellect Limited | Other services | 2014 |
| Merseyside Business Services Limited | Professional & scientific | 2005 |
| Merseyside Cakes Limited | Manufacturing | 2020 |
| Merseyside Canine Academy Ltd | Education | 2025 |
| Merseyside Car Dismantlers Holdings Ltd | Wholesale & retail | 2018 |
| Merseyside Cash Registers Limited | Information & communication | 2017 |
| Merseyside Central Heating Limited | Construction | 1989 |
| Merseyside Central Heating Renewables Limited | Construction | 2013 |
| Merseyside Chicken Ltd | Wholesale & retail | 2020 |
| Merseyside Commercial Finance Ltd | Financial services | 2025 |
| Merseyside Construction Group Ltd | Construction | 2024 |
| Merseyside Construction Hub Limited | Professional & scientific | 2023 |
| Merseyside Construction Ltd | Construction | 2025 |
| Merseyside Dementia Friendly Radio CIC | Information & communication | 2020 |
| Merseyside Development Holdings Ltd | Real estate | 2020 |
| Merseyside Domestic Violence Service Ltd | Health & social care | 2003 |
| Merseyside Drainage Solutions Ltd | Water & waste | 2020 |
| Merseyside Dynamic Properties Ltd | Real estate | 2025 |
| Merseyside Educational Psychology Limited | Education | 2020 |
| Merseyside Electrical Solutions Limited | Construction | 2025 |
| Merseyside Engineering Limited | Professional & scientific | 2011 |
| Merseyside Fire Door Inspections Ltd | Professional & scientific | 2021 |
| Merseyside Fixing Solutions Limited | Wholesale & retail | 2003 |
| Merseyside Flowers Ltd | Wholesale & retail | 2010 |
| Merseyside Food Store Ltd | Wholesale & retail | 2023 |
| Merseyside Greeting Cards Limited | Wholesale & retail | 1983 |
| Merseyside Gutters & Fascia Limited | Construction | 2024 |
| Merseyside Health Ltd | Health & social care | 2016 |
| Merseyside Heating & Plumbing Limited | Construction | 1985 |
| Merseyside Holding Ltd | Financial services | 2025 |
| Merseyside Houses Ltd | Real estate | 2014 |
| Merseyside Housing & Debt Advice CIC | Health & social care | 2024 |
| Merseyside Jewish Community Care | Administrative & support | 2007 |
| Merseyside Jewish Community Care Services Limited | Other services | 2007 |
| Merseyside Jewish Representative Council | Other services | 2010 |
| Merseyside Joinery and Building Limited | Construction | 2022 |
| Merseyside Law Centre Limited | Professional & scientific | 2015 |
| Merseyside Lettings Ltd | Real estate | 2025 |
| Merseyside Loan and Equity Fund LLP | | 2008 |
| Merseyside Metalworks Holdings Limited | Manufacturing | 2008 |
| Merseyside Mini Piles Ltd | Construction | 2022 |
| Merseyside Model Railway Society | Other services | 2013 |
| Merseyside Movers + Storers Limited | Transport & logistics | 2007 |
| Merseyside Passenger Transport Services Limited | Transport & logistics | 1972 |
| Merseyside Polonia | Health & social care | 2009 |
| Merseyside Property Holdings Ltd | Real estate | 2022 |
| Merseyside Property Investments Ltd | Real estate | 2004 |
| Merseyside Property Ltd | Real estate | 2021 |
| Merseyside Removals Ltd | Transport & logistics | 2025 |
| Merseyside Script LAB Limited | Arts & recreation | 2025 |
| Merseyside Services Ltd | Construction | 2025 |
| Merseyside Shiprepairers Limited | Manufacturing | 1987 |
| Merseyside Skeptics Society Limited | Other services | 2010 |
| Merseyside Small Loans for Business Investment Fund Limited | Financial services | 1995 |
| Merseyside Society for Deaf People | Health & social care | 1997 |
| Merseyside Sofa and BED Company Ltd | Wholesale & retail | 2024 |
| Merseyside Somali and Community Association Limited | Administrative & support | 2025 |
| Merseyside Special Investment (Small Firms) Fund | | 1996 |
| Merseyside Special Investment (Small Firms) Fund Two Limited | Financial services | 2001 |
| Merseyside Special Investment Fund Limited | Financial services | 1994 |
| Merseyside Special Investment Mezzanine Fund NO. 2 | | 2001 |
| Merseyside Special Investment Mezzanine Fund Two Limited | Financial services | 2001 |
| Merseyside Special Investment Small Firms Fund NO.3 | | 2001 |
| Merseyside Special Investment Venture Fund Limited | Financial services | 1995 |
| Merseyside Special Investment Venture Fund LP | | 1996 |
| Merseyside Special Investment Venture Fund NO. 3 | | 2001 |
| Merseyside Special Investment Venture Fund NO.2 | | 2000 |