RSK has announced that it will continue as the club’s principal sustainability partner and front-of-shirt sponsor for the 2026–2027 season, extending its support across the men’s, women’s and academy teams.

The group’s logo has been on the front of the men’s first team home and third shirts and the women’s first team away shirt since the group initially partnered with the club in 2022. This season marks the second season the logo will appear across all sections of the club’s teams.

RSK founder, Chief Executive Officer and proud Charlton fan Alan Ryder said the group was delighted to continue its relationship with the club.

“Charlton represents the teamwork, determination and sense of community that means a great deal to everyone at RSK, and we are especially pleased to see the continued growth and success of the women’s team. From supporting the teams on matchdays to working alongside the club on its wider ambitions, this partnership reflects what we value at RSK: commitment, teamwork and pride in what we do. We are delighted to play our part in the next chapter for the whole club.”

In September 2025, Charlton was awarded silver status by the English Football League’s Green Club, reflecting the club’s work with RSK to improve its environmental practices.

RSK Sports and Leisure Director Wayne Mumford said: “We look forward to continuing to support Charlton on its sustainability journey. The silver award follows a rigorous assessment process and reflects its commitment to implementing meaningful change. Investments in efficient LED floodlighting, moving to renewable energy sources and enhancing water management systems have all contributed to this achievement. We look forward to continuing to support Charlton on its sustainability journey.”

Charlton Athletic Commercial Director Alice Olney said: “Our partnership with RSK has been an important part of the club’s recent history. They’ve been with us as the club has progressed in recent seasons, supporting us in the board’s vision to become more environmentally and financially sustainable. We’re really pleased to extend the partnership and we’re looking forward to continuing our work with them.”