| 3dotts Ltd | Garages & mechanics | PO5 4PL | 2025 |
| A & B Motors Ltd | Garages & mechanics | PO5 2DA | 2010 |
| A Cube Services Ltd | Cleaners | PO5 1NR | 2025 |
| A R Taylor Electrical Services Ltd | Electricians | PO5 1DS | 2013 |
| A Sterling Developments Ltd | Builders | PO5 2DA | 2026 |
| A Sterling Landscapes Ltd | Gardeners & landscapers | PO5 2DA | 2026 |
| A T Gas & Plumbing Ltd | Plumbing & heating | PO5 1DS | 2021 |
| A&L Decorating Oxford Holding Ltd | Builders | PO4 0JS | 2022 |
| A&P Bul Ltd | Plumbing & heating | PO1 5LW | 2021 |
| A.D.I. Driving Tuition Ltd | Garages & mechanics | PO5 2DA | 1991 |
| A.L.L Decorating &Property Services Ltd | Painters & decorators | PO5 1LU | 2016 |
| A1 Automac Ltd | Garages & mechanics | PO5 1LH | 2011 |
| A1 Body Works Ltd | Garages & mechanics | PO5 1LH | 2017 |
| Aba Domestic Appliances Ltd | Appliance repair | PO5 3AY | 2023 |
| Absolute Shutters UK Ltd | Builders | PO5 4NS | 2014 |
| Adam K Electrical Services Ltd | Electricians | PO5 2SE | 2015 |
| Adnan Barbers Ltd | Hair & beauty | PO5 4AF | 2026 |
| Ags Electrical Division Ltd | Electricians | PO5 2DA | 2025 |
| Aiga Construction Ltd | Builders | PO5 1ET | 2015 |
| Aiwa Group Ltd | Builders | PO4 0EW | 2015 |
| Aj Plumbing&Building Services Ltd | Builders | PO5 1SE | 2023 |
| Akil Carpentry Ltd | Joiners & carpenters | PO5 4JQ | 2025 |
| Albany Carpet and Upholstery Cleaning Ltd | Cleaners | PO4 8AW | 2011 |
| Aleksandar Ltd | Garages & mechanics | PO1 5DS | 2026 |
| All Seasons Southern Ltd | Glaziers | PO5 1DS | 2013 |
| Always Hair Wigs Ltd | Hair & beauty | PO4 9AJ | 2026 |
| Am Electrical South Ltd | Electricians | PO4 0DB | 2019 |
| Am Property Construction Ltd | Builders | PO5 4JE | 2024 |
| Am Renewables Ltd | Electricians | PO4 0DB | 2025 |
| Amerlynck Engineering Ltd | Builders | PO5 2SE | 2015 |
| Amp Electrical Solutions Ltd | Electricians | PO5 1DS | 2024 |
| Ams Pipework Ltd | Plumbing & heating | PO1 5AU | 2018 |
| Andromeda Carpentry and Building Services Ltd | Builders | PO1 5HU | 2004 |
| Andy Graham Civils Ltd | Joiners & carpenters | PO5 2DA | 2013 |
| Angel Nails Portsmouth Ltd | Hair & beauty | PO1 4AH | 2024 |
| Anna'S Aesthetics Ltd | Hair & beauty | PO4 0JT | 2025 |
| Aperture Windows & Doors Ltd | Glaziers | PO5 1DS | 2023 |
| Approved Cleaning Ltd | Cleaners | PO1 1PJ | 2026 |
| Aqua Car Wash Portsmouth Ltd | Garages & mechanics | PO5 1LH | 2022 |
| Aqua Vitae Ltd | Plumbing & heating | PO5 2DA | 2025 |
| Aquaheat 4 U Ltd | Plumbing & heating | PO5 2BU | 2025 |
| Aque Construction Ltd | Builders | PO5 2DA | 2024 |
| Aryo'S Barber Ltd | Hair & beauty | PO1 5HH | 2026 |
| At Building Construction Ltd | Builders | PO5 1DS | 2025 |
| Atm Fencing & Landscaping Ltd | Builders | PO3 6BN | 2024 |
| Aurel Construction Ltd | Builders | PO1 5RF | 2016 |
| Austin Decorating Ltd | Painters & decorators | PO1 5DU | 2026 |
| Av Plumbing and Heating Ltd | Plumbing & heating | PO5 2DA | 2018 |
| B & B Barbers Ltd | Hair & beauty | PO5 2SL | 2006 |
| B M R Countryside Ltd | Cleaners | PO5 3JL | 2007 |
| Bakes Construction Ltd | Builders | PO5 1DS | 2026 |
| Barakah Auto Garage Ltd | Garages & mechanics | PO5 1LH | 2016 |
| Barhill Plant Ltd | Builders | PO1 2RG | 1973 |
| Be'S Barbers Ltd | Hair & beauty | PO1 5HH | 2014 |
| Beautiful Bathrooms Ltd | Builders | PO5 1LN | 2026 |
| Beauty Hair Salon Ltd | Hair & beauty | PO5 2DA | 2016 |
| Bernie Eaden Electrical Ltd | Builders | PO5 1DS | 2019 |
| Bjp Projects Ltd | Builders | PO5 2SE | 2022 |
| Blackledge Engineering Services Ltd | Builders | PO5 1PW | 1993 |
| Blue Fox Groundworks and Civils Ltd | Builders | PO5 2DA | 2019 |
| Bmc Services Carpentry & Building Contractors Ltd | Builders | PO5 1LU | 2014 |
| Bmr Interiors Ltd | Plasterers | PO5 1NJ | 2015 |
| Boon Construction Ltd | Builders | PO4 0HE | 2024 |
| Boss Barber 6 Ltd | Hair & beauty | PO1 4EZ | 2026 |
| Boss Portsmouth Barber Ltd | Hair & beauty | PO1 4EZ | 2025 |
| Brialex Construction Ltd | Builders | PO4 0PH | 2016 |
| Brooks Drywall Systems Ltd | Plasterers | PO5 1DS | 2016 |
| Bryburn Fire Protection Ltd | Builders | PO5 1DS | 2024 |
| Build & Refurb Associates Ltd | Builders | PO5 2DA | 2011 |
| Build & Refurb Management and Consult Ltd | Builders | PO5 2DA | 2020 |
| Bz Carpet Care Ltd | Cleaners | PO1 5QF | 2026 |
| C Slater Dry Lining Ltd | Plasterers | PO5 1DS | 2016 |
| Caldararu Prestige Cleaning Ltd | Cleaners | PO4 8AU | 2026 |
| Calder Bricklaying Contractors Ltd | Builders | PO5 1DS | 2007 |
| Camrose Heating Ltd | Plumbing & heating | PO1 2RG | 2022 |
| Car Park Wash & Valeting Ltd | Cleaners | PO4 0EU | 2021 |
| Carpe Diem Property Developments Ltd | Cleaners | PO5 1DS | 2023 |
| Carrin Construction & Development Ltd | Builders | PO5 1DS | 2026 |
| Casa Renovations Ltd | Builders | PO1 2RG | 2021 |
| Castaway Carpentry Ltd | Builders | PO4 0DP | 2023 |
| Catalystvista Ventures Ltd | Electricians | PO1 2TW | 2025 |
| Cd & Ps (Fareham) Ltd | Builders | PO5 3AY | 2015 |
| Celly'S Portsmouth Ltd | Hair & beauty | PO1 1EA | 2026 |
| Cfl Paving Groundworks Ltd | Builders | PO5 2DA | 2019 |
| Chic Hair Ltd | Hair & beauty | PO1 2SN | 2022 |
| Chichester Flooring Ltd | Flooring & tiling | PO5 2DA | 2025 |
| Chiyempire All In One Ltd | Cleaners | PO1 1LA | 2026 |
| Christian Decorating Ltd | Painters & decorators | PO1 5LN | 2026 |
| City Lounge Barbers Ltd | Hair & beauty | PO5 2SE | 2025 |
| Cjr Fire Protection Ltd | Builders | PO5 2SE | 2024 |
| Cjs Construction Services Ltd | Builders | PO1 5HY | 2023 |
| Clclj Ltd | Cleaners | PO1 1PB | 2025 |
| Clean Diesel Company Ltd | Cleaners | PO5 2DA | 2021 |
| Clearnest Cleaning Services Ltd | Cleaners | PO2 7DP | 2025 |
| Club Commerce Architecture Ltd | Builders | PO1 4RJ | 2020 |
| Cm Brickwork Ltd | Builders | PO5 4PA | 2026 |
| Commercial Gas Engineers Southern Ltd | Plumbing & heating | PO5 1ED | 2022 |
| Conlex Electrical Services Ltd | Electricians | PO4 8RQ | 2025 |
| Conway Mechanical Ltd | Plumbing & heating | PO1 2SN | 2017 |
| Copper Renovations Ltd | Builders | PO4 0ES | 2023 |
| Craneswater Gas Ltd | Plumbing & heating | PO5 3AY | 2008 |
| Craneswater Mechanical Services Ltd | Plumbing & heating | PO5 4DJ | 2008 |
| Cre8 Roofing & Cladding Ltd | Roofers | PO5 1RN | 2017 |
| Creative Driveways & Patio Solutions Ltd | Gardeners & landscapers | PO5 3AY | 2014 |
| Cresselia Ltd. | Painters & decorators | PO1 5AH | 2014 |
| Crestpoint Cleaning & Facilities Ltd | Cleaners | PO1 5QD | 2026 |
| Crisitan Ltd | Builders | PO4 0JS | 2024 |
| Crossway Insulation Ltd | Builders | PO5 1DS | 2010 |
| D & H Carpentry and Construction Ltd | Joiners & carpenters | PO5 1LN | 2018 |
| D L Home Improvements Ltd | Builders | PO5 1DS | 2025 |
| D R K Interiors Ltd | Builders | PO5 1DS | 2013 |
| D Robinson Brickwork Ltd | Builders | PO5 1DS | 2025 |
| D T Developments (Southern) Ltd | Builders | PO5 2SN | 2015 |
| D W L Home Improvements Ltd | Builders | PO5 1DS | 2021 |
| D&H Damp Proofing Ltd | Builders | PO5 1LN | 2025 |
| D'Luxe Nails Ltd | Hair & beauty | PO4 0JP | 2026 |
| D.Gerocs Ltd | Builders | PO5 1NT | 2019 |
| D2i Property Maintenance Ltd | Builders | PO1 2RG | 2009 |
| Daisesexquisite Ltd | Cleaners | PO1 5JB | 2025 |
| Daish & Son'S Builders Ltd | Builders | PO5 1DS | 2015 |
| Danilcom Construction Ltd | Builders | PO1 5HZ | 2025 |
| Dark Rose Cleaning Co Ltd | Cleaners | PO1 5QU | 2026 |
| Davies & Davies Plumbing and Heating Ltd | Plumbing & heating | PO5 2DA | 2018 |
| Dean Carter Electrical Ltd | Electricians | PO4 0EX | 1999 |
| Denisa V Ltd | Hair & beauty | PO5 3JF | 2025 |
| Design 1805 Southern Ltd | Joiners & carpenters | PO1 2RG | 2026 |
| Diamond Style Car Ltd | Garages & mechanics | PO5 2AR | 2023 |
| Dicksons Construction and Crane Services Ltd | Builders | PO5 1DS | 2015 |
| Dil'S Barbers 103 Ltd | Hair & beauty | PO1 5AH | 2021 |
| Dil'S Barbers 109 Ltd | Hair & beauty | PO1 5AH | 2025 |
| Dilsbarbers129 Ltd | Hair & beauty | PO5 1LN | 2025 |
| Divalog Solution Ltd | Cleaners | PO2 7DP | 2026 |
| Dlg Decorating & Property Services Ltd | Painters & decorators | PO1 1QX | 2018 |
| Dlg Dps Ltd | Builders | PO1 1QX | 2021 |
| Douglasag Ltd | Builders | PO4 0HP | 2026 |
| Down To Earth Drainage Ltd | Plumbing & heating | PO5 3HB | 2025 |
| Doxa Facility Group Ltd | Cleaners | PO1 5RF | 2026 |
| Drini Ltd | Groundworks & demolition | PO5 3AY | 2016 |
| Ds Car Wash Ltd | Cleaners | PO1 1NT | 2022 |
| Dtb Corporations Ltd | Hair & beauty | PO1 5AL | 2023 |
| Dtw Nails Ltd | Hair & beauty | PO1 1DE | 2024 |
| Dwell Projects Ltd | Builders | PO1 5BX | 2012 |
| Dynamic Decorating Ltd | Painters & decorators | PO4 9AZ | 2025 |
| E R B Motors Ltd | Garages & mechanics | PO5 1DS | 1999 |
| E4commercial Electrics Ltd | Electricians | PO5 1RT | 2015 |
| Eaststar Properties (Southern) Ltd | Builders | PO5 2DA | 2017 |
| Eco Autoclean Ltd | Cleaners | PO5 4PQ | 2019 |
| Ecowipeconsulting Ltd | Cleaners | PO5 2BU | 2025 |
| Edit Laser Specialists Ltd | Hair & beauty | PO5 2SE | 2021 |
| Efex Hamsphire Domestic Cleaning Services Ltd | Cleaners | PO5 1LU | 2023 |