A British soldier tragically lost her life following a riding accident at the Royal Windsor Horse Show. Ciara Sullivan, aged 24 and a member of the Royal Horse Artillery, fell from her horse shortly after a performance on Friday, May 15. Immediate medical assistance was provided, but she succumbed to her injuries at the scene, confirmed the Ministry of Defence (MoD) and Thames Valley Police in a statement released the following day.
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The incident occurred around 7 p.m. local time after Sullivan completed her display in the arena. Thames Valley Police has deemed the circumstances of her death “unexplained,” but noted that it is not considered suspicious. The police have since informed Sullivan’s next of kin and extended their support during this challenging time.

Known affectionately as “Sully” by those close to her, Sullivan enlisted in the British Army in November 2020 and became a member of The King’s Troop Royal Horse Artillery in June the following year. Described as a “fearless horsewoman,” she demonstrated her love for equestrian pursuits from a young age and had a history of competing in showjumping events prior to joining the regiment.

Her commanding officer praised Sullivan’s dedication and skills, stating she was an “outstanding soldier and a role model” to her peers. “She was a fearless and gifted horsewoman, eager to ride the most challenging horses,” he added, highlighting her impressive command over equestrian skills and leadership qualities. Beyond her equestrian prowess, Sullivan was also recognised for her talents on the football field.
Despite the tragedy, the horse show proceeded over the weekend, although the display by The King’s Troop Royal Horse Artillery was understandably omitted. King Charles, who was in attendance at the time of the incident alongside other royal family members, expressed his shock and sorrow upon learning of Sullivan’s death. Buckingham Palace stated that the royal family extended their deepest condolences to Sullivan’s family, military comrades, and friends, reflecting the profound sense of loss experienced by many.
The MoD stated that Sullivan had a genuine passion for horses and had participated in various ceremonial duties since joining the regiment, including notable Royal Gun Salutes and the state funeral of Queen Elizabeth in 2022. Her contributions to these significant events highlight her integral role within the British Army, resonating with both military personnel and the public.
Thames Valley Police continues to investigate the circumstances surrounding Sullivan’s death, appealing for anyone with relevant information or evidence to come forward. Chief Superintendent Michael Loebenberg conveyed condolences to Sullivan’s family and the military community during this difficult period, while assuring that the investigation is being conducted in collaboration with the MoD, the Defence Accident Investigation Branch, and the organisers of the Royal Windsor Horse Show.
As the community mourns the loss of a dedicated soldier and beloved friend, tributes have begun to pour in, recognising Sullivan’s commitment not only to her military duties but also to her passions for horses and sports. Her legacy will continue to inspire those who knew her and emphasise the dedication required in serving the nation.
