MICHAEL HOLDEN A wealthy Nigerian politician and his family plotted to bring a street trader from Nigeria to Britain and pay him a few thousand pounds to donate his kidney for a transplant for his ill daughter, a British prosecutor told a London court. Ike Ekweremadu, 60, his wife Beatrice, 55, daughter Sonia, 25, and Nigerian doctor Obinna Obeta, 50, who is accused of acting as a middleman, all deny a charge of conspiracy to arrange travel of another person with a view to exploitation between August 2021 and May 2022. Prosecutor Hugh Davies said Ekweremadu, an opposition senator in…