Queen Camilla chats with the Princess of Wales's brother James Middleton during reception at royal residence

Among those who attended the reception was Lucy, accompanied by her Medical Alert Assistance Dog, Wolfie.

The specially trained canine plays a vital role in Lucy's daily life, alerting her to episodes of Postural Tachycardia Syndrome before they occur.

Medical Alert Assistance Dogs are trained by the charity to warn their owners when a potentially life-threatening medical episode is imminent, enabling them to take preventative action.

Queen Camilla observed a demonstration of cutting-edge technology designed to replicate the remarkable diagnostic abilities of the charity's dogs.

The electronic nose device, created through a partnership between Medical Detection Dogs and Dr Andreas Mershin of RealNose.AI, aims to provide scalable screening for early-stage prostate cancer.

The innovative tool draws directly on the expertise of the charity's Bio Detection Dogs, whose ability to identify disease through scent has informed its development.

During the event, The Queen was introduced to Florin, one of the dogs whose work has helped shape this groundbreaking screening technology.

Medical Detection Dogs operates two distinct programmes to harness the extraordinary olfactory capabilities of trained canines. The charity's dogs can identify even minute traces of odours associated with various health conditions.

Those living with complex conditions such as Type 1 diabetes, PoTS, or severe allergies benefit from Medical Alert Assistance Dogs, which provide warnings that help prevent hospital admissions.

Bio Detection Dogs work in a different capacity, analysing samples within the charity's training facilities to identify conditions including various cancers, Parkinson's disease, malaria, and bacterial infections.

The Queen has witnessed numerous Bio Detection Dogs in action over recent years, including those trained to detect cancer and Covid-19.