| Arcthink Limited | Information & communication | 2018 |
| Ardcrone Joinery Ltd. | Construction | 2020 |
| Ardlang Ltd | Transport & logistics | 2026 |
| Aremar Golf Managed Solutions Limited | Professional & scientific | 2023 |
| Areto Consulting Ltd | Information & communication | 2014 |
| Areto Services Ltd | Real estate | 2021 |
| Argo Foods Limited | Manufacturing | 2003 |
| ARH Toiletries Ltd | Manufacturing | 2019 |
| Arka Architects Limited | Professional & scientific | 2001 |
| ARL Enterprises Ltd | Professional & scientific | 2013 |
| ARL Technology Ltd | Information & communication | 2019 |
| Armaan Trading Ltd | Wholesale & retail | 2022 |
| Armonia Holding Ltd | Hospitality | 2024 |
| Armour Security Ltd | Administrative & support | 2018 |
| Arneil Johnston Limited | Professional & scientific | 1988 |
| Arnott and Wright Ltd | Other services | 2023 |
| Aros Heat Design Ltd | Professional & scientific | 2026 |
| Arpith Limited | Health & social care | 2019 |
| Art Hair & Beauty Ltd | Other services | 2010 |
| Arta Skin and Laser Clinic Ltd | Other services | 2022 |
| Arthur Solutions Ltd | Professional & scientific | 2013 |
| Artic Trailer Services (Falkirk) Limited | Transport & logistics | 1972 |
| Artio Health Limited | Information & communication | 2024 |
| Artisan Greek Kitchen Ltd | Hospitality | 2025 |
| Artisan Window Solutions Ltd | Wholesale & retail | 2021 |
| Arto House Ltd | Water & waste | 2026 |
| AS Recruitment Ltd | Administrative & support | 2024 |
| AS3 Trading Limited | Wholesale & retail | 2012 |
| Asasé Beauty Limited | Wholesale & retail | 2025 |
| Ascendancy Finance Ltd | Administrative & support | 2022 |
| Ascot Roofing Scot Ltd | Construction | 2025 |
| ASD Property LLP | | 2012 |
| ASH Salon Ltd. | Other services | 2023 |
| Ashburn Aesthetics Ltd | Health & social care | 2024 |
| ASI4 Limited | Households | 2024 |
| ASN Play Pals CIC | Education | 2026 |
| Association of Advanced Biostructural Correction -- Europe (Abc-E) Ltd | Other services | 2018 |
| Assurgent Design Limited | Professional & scientific | 2019 |
| ASW Property (Scotland) Ltd | Real estate | 2026 |
| Atex Design Limited | Real estate | 2016 |
| ATM Commissions Limited | Other services | 2019 |
| Atomic Software Limited | Professional & scientific | 2022 |
| Attaboy Ltd | Hospitality | 2022 |
| Auburn Spirits Ltd | Wholesale & retail | 2024 |
| Audio Visual Specialists Scotland Limited | Wholesale & retail | 2025 |
| Augmentum Influencer Solutions Ltd | Professional & scientific | 2022 |
| August Place Ltd. | Real estate | 2021 |
| Auntie Ann’S Ltd | Hospitality | 2025 |
| Aurelion Engineering Ltd | Professional & scientific | 2026 |
| Aurelion Holdings Ltd | Financial services | 2026 |
| Aurian Mortgage Solutions Limited | Financial services | 2023 |
| Aurian Property Investments Ltd | Real estate | 2026 |
| Aurora Building Projects Ltd | Construction | 2024 |
| Auto Doors Limited | Manufacturing | 2019 |
| Autoems Limited | Manufacturing | 2018 |
| Autopoint (Falkirk) Ltd. | Water & waste | 2026 |
| Autotech Solutions (Scotland) Limited | Wholesale & retail | 2014 |
| Avents Planning Limited | Hospitality | 2024 |
| Aviemore Car & Van Rental Limited | Administrative & support | 2005 |
| Avmaga Ltd | Information & communication | 2025 |
| Avonbrae Care Limited | Health & social care | 2025 |
| AVONLEA(2025) Limited | Hospitality | 2025 |
| Avonsnacks Ltd | Hospitality | 2025 |
| Avsd Limited | Hospitality | 2006 |
| Awbt Ltd | Real estate | 2025 |
| AWH Consultancy Ltd | Wholesale & retail | 2014 |
| Awsam Ltd | Hospitality | 2025 |
| AY Fitness Limited | Arts & recreation | 2025 |
| AYE Consulting Ltd | Information & communication | 2022 |
| Ayesh&Co Ltd | Wholesale & retail | 2023 |
| AZU Distribution Ltd | Wholesale & retail | 2025 |
| B & B Capital Partners (SLP GP) Ltd | Financial services | 2013 |
| B Justice Inspections Limited | Construction | 2014 |
| B K N Welding & Fabrication Limited | Other services | 2018 |
| B L Groundworks (Scotland) Ltd. | Construction | 2024 |
| B&B Capital Partners (SLP) L.P. | | 2013 |
| B&B Global Investment Limited | Wholesale & retail | 2025 |
| B.C.S. Holdings (Scotland) Limited | Financial services | 2017 |
| B1 YAS Store Ltd | Wholesale & retail | 2026 |
| B2 Homes Ltd | Real estate | 2020 |
| B2 Joinery Ltd | Construction | 2025 |
| B2M Healthcare Ltd | Health & social care | 2024 |
| B4GO Ltd | Wholesale & retail | 2026 |
| Back in Balance Limited | Other services | 2015 |
| BACK2LIFE Clinics Ltd | Health & social care | 2012 |
| Badora Property Group Ltd | Construction | 2025 |
| Bairns Properties Limited | Real estate | 2021 |
| Ballon Do'R Coaching Ltd | Arts & recreation | 2026 |
| Balquhatstone Limited | Professional & scientific | 2013 |
| Baltic Sea Management Services Ltd | Real estate | 2020 |
| Bang on Cars Limited | Wholesale & retail | 2023 |
| Bang on IT Ltd | Manufacturing | 2025 |
| Bankside MOT & Repair Centre Ltd | Wholesale & retail | 2023 |
| Bark Meow Ltd | Wholesale & retail | 2025 |
| Barrel of Sunshine Ltd | Information & communication | 2024 |
| Barrie Scott Limited | Professional & scientific | 2012 |
| Barrowcliffe Property Maintenance Limited | Other services | 2020 |
| Base Investment Group Ltd | Real estate | 2023 |
| Bath & Tile Ltd | Wholesale & retail | 2023 |
| Bathroom Supercentre Limited | Construction | 2010 |