Mr Nyingi said he had brought the case because he wanted the world to know about the years he had lost and "what was taken from a generation of Kenyans".
He said: "If I could speak to the Queen I would say that Britain did many good things in Kenya but that they also did many bad things."
"I do not hold her personally responsible but I would like the wrongs which were done to me and other Kenyans to be recognised by the British Government so that I can die in peace."
More top news
Choir wins public vote, while judges pick dancers ahead of 12-year-old singer-songwriter Henry Gallagher.
The hunt for murder suspect Jed Allen has ended after police found his body two days after discovering his mother, stepdad and sister dead.
A woman who had been searching for her mother for more than 10 years has been reunited with her after posting an appeal on social media.