Mr Bishop, said: “We are honoured to welcome the Princess Royal to our flagship event the RDA National Championships, at which we are celebrating our 55th anniversary and delighted that she has chosen to join us as she returns to royal duties.
“As our president, the Princess holds a very special place in the hearts of the entire RDA community and has helped us celebrate many significant milestones and provided invaluable support for over five decades.”
The RDA National Championship, held over three days, is the biggest equestrian event of its kind for disabled competitors, who take part in dressage, vaulting, endurance showjumping, carriage driving, performance showing and countryside challenge classes.
British contenders for the Paris 2024 Paralympic Games, including Sophie Christiansen, Natasha Baker, Gabriella Blake, Georgia Wilson and Mari Durward-Akhurst, all started their competitive journey at the RDA National Championships.