The Castle Hotel

The Castle Hotel Windsor to undergo exciting £9.5 million transformation

We are delighted to announce that The Castle Hotel Windsor is embarking on an exciting refurbishment programme to further enhance our historic property and guest experience. 

Sutton Hotel Collection has announced a £9.5 million refurbishment of The Castle Hotel Windsor, to be completed in 2026. The multi-phase transformation led by interior designers including 3DReid will start in November 2025

Starting with the Mews and bedrooms in the original hotel, and concluding with the Park Wing, the refresh will also involve a redesign of the ground floor and the launch of a new British brasserie concept in the restaurant. A significant aspect of the investment includes the team which will be increased and developed to deliver an enhanced guest service. The programme will run throughout 2026 with completion scheduled towards the end of 2026.From 3rd November through to 22nd June, the hotel will remain open with our Meetings & Events facilities fully operational and available for bookings. Our dedicated team will continue to deliver the highest standard of service to ensure your events run smoothly. What to expect during this period: The Mews and Main House bedrooms will be out of service, with limited availability in the Park Wing. Our restaurant and bar will be closed. Breakfast will be served daily in The Balmoral, which will also serve as a lounge and bar space for resident guests in the afternoon. From early November, reception will relocate to the Meetings & Events entrance. Guest access will be via a covered pathway through the terrace from the High Street. The garden will remain closed. Limited or no on-site parking will be available. All upstairs meeting and event rooms remain open and fully available to book. While certain areas of the hotel will be out of service, this project marks a significant investment in the future of The Castle Hotel Windsor, and we are excited to unveil the results in June 2026. We thank you for your continued support during this period of transformation and look forward to welcoming you and your delegates to the hotel. 

The Castle Hotel Windsor achieves first Gold Green Meetings award

The Castle Hotel Windsor has achieved a Gold Green Meetings award on its first submission alongside retaining the Gold Green Tourism Award for the second consecutive year. This dual recognition highlights the hotel’s commitment to sustainability, particularly in its meeting and event services, offering businesses the opportunity to host eco-conscious meetings in the heart of Windsor.

The Green Meetings Award reflects their focused efforts on creating sustainable, environmentally responsible meeting packages. The Castle Hotel excelled in key areas such as greener delegates, local experiences, low carbon activities, and the promotion of destination elements like cultural heritage, events, and supporting local projects, all of which received top scores in their audit.

The hotel’s dedicated green meetings package is designed to reduce the environmental impact of events. This includes the introduction of vegan delegate menus that cater to dietary preferences and sustainability goals, the use of locally sourced, eco-friendly products, and options for delegates to engage in low carbon activities such as bike rentals and local cultural experiences. These initiatives make The Castle Hotel Windsor a leader in green conferencing, appealing to companies focused on also reducing their carbon footprint.

The Castle Hotel Windsor has truly set the benchmark for green meetings. Their extensive range ofsustainable initiatives—coupled with their strong engagement with local communities and projects—makesthem a prime example of how eco-friendly conferences and events should be run,” praised the Green Tourismaudit.

To continue this leadership in sustainability, The Castle Hotel Windsor is working closely with Mission Net Zero to further refine its meeting and event practices. Areas of focus moving forward include improving Meeting and Event Reporting and continuing to enhance its Green Meetings or Events Packages. The hotel’s long-term commitment to sustainability is evident in every facet of its operation, ensuring that it remains a top choice for businesses looking to host responsible and sustainable events.

“We are delighted to receive these prestigious awards, which reflect our ongoing commitment to sustainability and our connection with the local community. Our team is passionate about delivering eco-friendly solutions and creating memorable experiences while supporting local initiatives such as community litter picking, participating in the Sunflower Walk, and supporting Thames Hospice our nominated charity this year. " Sam Goss, General Manager, The Castle Hotel Windsor

For businesses seeking a truly eco-conscious venue, The Castle Hotel Windsor’s Green Meetings package offers a compelling solution. From vegan menus to low carbon activities, companies can now make sustainability a core part of their conference experience.