| Yaxley FC (Stadium) Limited | Arts & recreation | 2004 |
| Yaxley Festival Funding Limited | Arts & recreation | 2013 |
| Yaxley Foods Ltd | Hospitality | 2024 |
| Yaxley Garage Ltd | Wholesale & retail | 2025 |
| Yaxley Kitchen Install Ltd | Construction | 2024 |
| Yaxley Mini Market Ltd | Wholesale & retail | 2025 |
| Yaxley OUT of School Club Limited | Health & social care | 2019 |
| Yaxley United Football Club CIC | Arts & recreation | 2025 |
| Yaxley Wines Ltd | Wholesale & retail | 2010 |
| Yayogrammo Ltd | Wholesale & retail | 2025 |
| Yazzn Limited | Wholesale & retail | 2025 |
| YBS Medical Ltd | Health & social care | 2020 |
| Yealand Fund Services Limited | Financial services | 2009 |
| Yealand Group Limited | Administrative & support | 2015 |
| Yeavering Advisory Limited | Professional & scientific | 2025 |
| YEC Property Ltd | Real estate | 2022 |
| Yehoda Company Ltd | Manufacturing | 2020 |
| Yello-W Consultancy & Coaching Limited | Administrative & support | 2025 |
| Yellow BEE Cleaning Services Ltd | Administrative & support | 2022 |
| Yellow CAB Print Limited | Manufacturing | 2002 |
| Yellow Cars (Peterborough) Ltd | Transport & logistics | 2019 |
| Yellow Rose SA Ltd | Real estate | 2023 |
| Yellow Tulip Care Limited | Administrative & support | 2025 |
| Yellowgates Courier Ltd | Transport & logistics | 2019 |
| Yellownest UK Limited | Administrative & support | 2020 |
| Yellowstone Financial Limited | Professional & scientific | 2018 |
| Yelvi Ltd | Wholesale & retail | 2026 |
| Yeomans Jobs Consulting Limited | Administrative & support | 2021 |
| Yeroku Ltd | Information & communication | 2026 |
| YES Energy Surveys Ltd | Professional & scientific | 2019 |
| YES Granite Products Ltd | Administrative & support | 2010 |
| Yestera Ltd | Wholesale & retail | 2025 |
| Yetti's Kitchen Limited | Hospitality | 2015 |
| YEW Property Limited | Real estate | 2023 |
| Yewside [2014] Limited | Manufacturing | 2014 |
| YFD Ltd | Health & social care | 2019 |
| YFS Care Communities Limited | Administrative & support | 2008 |
| YG Venture Ltd | Wholesale & retail | 2021 |
| YI Barbers Ltd | Other services | 2024 |
| Yinchito Services Ltd | Transport & logistics | 2026 |
| Yiwu West Star Import&Export Co., Ltd | Wholesale & retail | 2025 |
| YK Car Solutions Ltd | Other services | 2023 |
| YK IG Ltd | Financial services | 2024 |
| YK Motors Limited | Wholesale & retail | 2021 |
| YK VIP Services Ltd | Professional & scientific | 2020 |
| YKA Group Limited | Wholesale & retail | 2018 |
| Ymj-Z Ltd | Wholesale & retail | 2021 |
| Yokehill Bistro Limited | Hospitality | 2025 |
| Yokehill Leisure Limited | Arts & recreation | 2025 |
| YOL Homes Ltd | Real estate | 2021 |
| Yolly Limited | Health & social care | 2019 |
| Yophie Medicals Limited | Health & social care | 2014 |
| Yora Ltd | Wholesale & retail | 2022 |
| York Place Holdings Limited | Real estate | 2021 |
| Yorkshire Brothers Housing Limited | Real estate | 2025 |
| YOU by Natalie Ltd | Education | 2025 |
| YOU Design Limited | Wholesale & retail | 2025 |
| Younas Holdings Ltd | Real estate | 2024 |
| Younas Inc Ltd | Real estate | 2025 |
| Young Marketing Ltd | Wholesale & retail | 2026 |
| Young Property Solutions Ltd | Real estate | 2019 |
| Young Technicians CIC | Education | 2017 |
| Youngs Schnauzers Limited | Agriculture & fishing | 2018 |
| Your 3PL Limited | Transport & logistics | 2020 |
| Your Absolute Care Ltd | Health & social care | 2022 |
| Your Accountancy People Ltd | Professional & scientific | 2013 |
| Your Bookkeeping People Ltd | Professional & scientific | 2013 |
| Your Business Concierge Ltd | Construction | 2020 |
| Your Daily Care Limited | Health & social care | 2020 |
| Your DAR | Education | 2023 |
| Your Digital LAB Ltd | Professional & scientific | 2017 |
| Your Electrical Solution Limited | Construction | 2021 |
| Your Escape Ltd | Administrative & support | 2015 |
| Your GIG Ltd | Other services | 2025 |
| Your Holiday Planners Ltd | Administrative & support | 2025 |
| Your Home Project Limited | Construction | 2017 |
| Your Lettings Peterborough Ltd | Real estate | 2017 |
| Your Local Euroshop Ltd | Wholesale & retail | 2025 |
| Your Local Trade Limited | Construction | 2024 |
| Your Mortgage Broker (Peterborough) Ltd. | Financial services | 2012 |
| Your Mortgage Brokerage Limited | Financial services | 2016 |
| Your Motoring Limited | Wholesale & retail | 2022 |
| Your Payroll People Ltd | Professional & scientific | 2013 |
| Your Pearl Bridal Ltd | Other services | 2020 |
| Your Recruitment Coach Limited | Administrative & support | 2017 |
| Your Solution S.B Ltd | Professional & scientific | 2020 |
| Your Total Coach Limited | Professional & scientific | 2003 |
| Yourhistoryguide Ltd | Wholesale & retail | 2023 |
| Yours Clothing Limited | Wholesale & retail | 1994 |
| Yours Fashion Limited | Manufacturing | 2021 |
| Yours Internet Limited | Manufacturing | 2021 |
| Yours Retail Limited | Manufacturing | 2021 |
| Yours Warehouse Limited | Manufacturing | 2021 |
| Yoursim Limited | Information & communication | 2014 |
| Yousof FBA Ltd | Wholesale & retail | 2025 |
| Youth Dreams Project Cambridge Ltd | Education | 2022 |
| Youth Dreams Project Leicestershire Ltd | Education | 2022 |
| Youth Dreams Project Lincolnshire Ltd | Education | 2026 |
| Youth Dreams Project Ltd | Education | 2014 |
| Yoyo Entertainment Ltd | Professional & scientific | 2021 |