By Bradley Jolly Prince Harry and Meghan Markle were left waiting at London Heathrow after the scheduled pilot for their British Airways flight to Nigeria fell ill. BA had to scramble a replacement for the 11-hour trip, it is understood, which delayed Harry and Meghan’s journey. However, they finally touched down in Abuja, Nigeria’s capital, at 5am the next day. Meghan, 42, had flown to London alone to meet Harry for the next leg of his Invictus Games promotion tour. The couple were reunited at Heathrow’s VIP Windsor Suite and eventually made their way to Africa in the First Class section of a…