A Nigerian, Adeyemi Opebiyi, has sued the United Kingdom for allegedly turning him back from entering the country after he had been granted a visa and had flown from Nigeria to the Manchester Airport.   Opebiyi, who described himself as the Head of Operations, Sabi Micro Finance Bank Ltd, said on arriving at Manchester Airport on March 14, 2021, he was stopped by the UK Immigration official, who insisted that he must be interviewed before he could be allowed into the UK.   He claimed that he was made to wait for eight hours at the immigration desk before he