The Thames Valley 250 is an annual ranking celebrating the top privately-owned businesses in the region listed by annual sales turnover.
Qualifying companies must be independent and headquartered in the Thames Valley.
The 2025 edition of the Thames Valley 250 is researched and compiled by The Business Magazine and sponsored by law firm Gateley Legal, insurance and benefits brokers Verlingue, accountancy firm Crowe UK, recruitment agency Michael Page and energy and sustainability adviser Inspired PLC
Cumulatively the 250 companies have an annual turnover of £33.5b and the companies on the 2025 ranking create an impressive 144,000 jobs.
All members are invited to enter the nominations for this year’s awards which will recognise outstanding achievements in eight categories. A private networking dinner will be held on 17th September 2025 at Easthampstead Park, Wokingham, to celebrate these achievements.
If you would like more information about this or any other rankings programme, please contact [email protected]
| 2025 | Company | Town | Description | Tunrover (M) | Employees | Year End |
| 1 | Ocean Partners | Maidenhead | Metal trading | 4,136.10 | 129 | 31/12/2023 |
| 2 | Urenco | Slough | Nuclear fuels | 1,666.90 | 1,983 | 31/12/2023 |
| 3 | WSH/Baxterstorey | Reading | Food services | 1,365.10 | 20,536 | 27/12/2023 |
| 4 | AA Limited | Basingstoke | Roadside assistant provider | 1,298.00 | 7,525 | 31/01/2024 |
| 5 | CALA Group | Wooburn Green | Housebuilder | 1,251.60 | 1,475 | 31/12/2023 |
| 6 | Unipart Group | Oxford | Logistics provider | 1,047.90 | 8,664 | 31/12/2023 |
| 7 | NIUK (Newbury Investments UK) | Newbury | Electrical, lighting, DIY, garden & security. | 1,034.20 | 1,854 | 31/12/2023 |
| 8 | Hook 2 Sisters | Bampton | Poultry farming | 999.2 | 1,001 | 31/07/2023 |
| 9 | Whistl | Marlow | Postal services | 766.3 | 2,413 | 31/12/2023 |
| 10 | Fletcher BAY Group t/a Argent Group | Henley-on-Thames | Food & food related businesses | 648.5 | 1140 | 31/12/2023 |
Awarded to a privately-owned business that has grown considerably year-on-year with a compelling story to tell; that has shown stellar growth and can demonstrate it is well set up to continue this growth trajectory over the next financial year, thereby having a hugely positive impact on the Thames Valley community.
This award celebrates and showcases leadership teams who champion their contribution to the community, prioritise the development and leadership capability of their people, and strive for excellence in products or services to build a business with a strong inclusive culture and strategic direction.
This award aims to recognise businesses from the Ranking that have demonstrated outstanding international performance in the last 12 months, either through expanding export sales by entering new regions; significantly increasing revenue and/or business activity in existing markets; successfully establishing operations in new territories; or adopting an innovative, proactive, or pragmatic approach to international business activities in response to the challenges or opportunities arising from changes in the global economic and geopolitical landscape.
Climate change is one of the most challenging issues ever faced by businesses. There is widespread recognition that if we don’t act quickly to find new sustainable practices in business, the economic and social consequences will be severe and potentially irreversible. This award recognises the achievements by businesses from the Ranking who are leading the way on sustainability and have implemented environmental initiatives to reduce their carbon footprint
Awarded to the company that has gone above and beyond to attract, retain or support their staff, community and beyond over the past 12 months. Judges will be looking for innovative solutions, strong business culture and commitment to people and community.
Awarded in recognition of the outstanding achievements of a CEO/managing director and the leadership team in growing the business, driving innovation, establishing the culture of the company and developing the brand. The judges will also be keen to hear details of how the CEO has led the company, overcoming challenges or to support the wider community.
Awarded in recognition of the outstanding achievements of a CEO/managing director and the leadership team in growing the business, driving innovation, establishing the culture of the company and developing the brand. The judges will also be keen to hear details of how the CEO has led the company, overcoming challenges or to support the wider community.
Awarded to a company that has demonstrated significant innovation within the past 12 months, making a notable impact on its business and/or industry. This innovation may relate to the business model (how the company creates, delivers, and captures value), marketing strategies (new ways to promote and sell products or services), embracing new technologies, or organisational changes (business practices, workplace organisation, or external relations). The innovation could address social needs and challenges, bring about radical changes (significantly altering the market or creating entirely new markets), or involve small, incremental improvements to existing products, services, or processes. The innovation will be evaluated based on its impact and the specifics of the innovation itself.
Awarded to a privately-owned business that has grown considerably year-on-year with a compelling story to tell; that has shown stellar growth and can demonstrate it is well set up to continue this growth trajectory over the next financial year, thereby having a hugely positive impact on the Thames Valley community.
This award celebrates and showcases leadership teams who champion their contribution to the community, prioritise the development and leadership capability of their people, and strive for excellence in products or services to build a business with a strong inclusive culture and strategic direction.
This award aims to recognise businesses from the Ranking that have demonstrated outstanding international performance in the last 12 months, either through expanding export sales by entering new regions; significantly increasing revenue and/or business activity in existing markets; successfully establishing operations in new territories; or adopting an innovative, proactive, or pragmatic approach to international business activities in response to the challenges or opportunities arising from changes in the global economic and geopolitical landscape.
Climate change is one of the most challenging issues ever faced by businesses. There is widespread recognition that if we don’t act quickly to find new sustainable practices in business, the economic and social consequences will be severe and potentially irreversible. This award recognises the achievements by businesses from the Ranking who are leading the way on sustainability and have implemented environmental initiatives to reduce their carbon footprint
Awarded to the company that has gone above and beyond to attract, retain or support their staff, community and beyond over the past 12 months. Judges will be looking for innovative solutions, strong business culture and commitment to people and community.
Awarded in recognition of the outstanding achievements of a CEO/managing director and the leadership team in growing the business, driving innovation, establishing the culture of the company and developing the brand. The judges will also be keen to hear details of how the CEO has led the company, overcoming challenges or to support the wider community.
Awarded in recognition of the outstanding achievements of a CEO/managing director and the leadership team in growing the business, driving innovation, establishing the culture of the company and developing the brand. The judges will also be keen to hear details of how the CEO has led the company, overcoming challenges or to support the wider community.
Awarded to a company that has demonstrated significant innovation within the past 12 months, making a notable impact on its business and/or industry. This innovation may relate to the business model (how the company creates, delivers, and captures value), marketing strategies (new ways to promote and sell products or services), embracing new technologies, or organisational changes (business practices, workplace organisation, or external relations). The innovation could address social needs and challenges, bring about radical changes (significantly altering the market or creating entirely new markets), or involve small, incremental improvements to existing products, services, or processes. The innovation will be evaluated based on its impact and the specifics of the innovation itself.
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