As of 2021, who is Great Britain's most successful ever Paralympian?

Dame Sarah Joanne Storey (née Bailey; born 26 October 1977) is a British Paralympic in cycling and swimming, and winning multiple gold medals in the Paralympic Games. Her total of 28 Paralympic medals including 17 gold medals makes her the most successful (by gold medals) and most decorated (by total medals) British Paralympian of all time as well as one of the most decorated Paralympic athletes of all time. She has the unique distinction of winning five gold medals in Paralympics before turning 19.

Sarah Storey, competing in her eighth Paralympics, won Great Britain's first gold medal of the Games, on the first day of competition, in the women's individual pursuit C5 cycling. It was Storey's fifteenth Paralympic gold medal, leaving her one behind Mike Kenny's British record of sixteen. On 31 August, Storey won her second gold of the Games in the Women's C-5 road time trial, winning her sixteenth Paralympic gold medal. On 2 September 2021, she surpassed Mike Kenny's 16 Paralympic gold medal record to become Great Britain's most successful Paralympic athlete of all time after securing her 17th Paralympic gold medal when she won the women’s road race C4-5 event.