Prince Harry and Meghan Markle have 'lit a spark' among pupils in Nigeria who 'still ask questions' about mental health a month on from their visit, charity boss says - as he insists the couple's tour was 'not just a photo op'

Prince Harry and Meghan Markle's attendance at a mental health summit in Nigeria last month has been praised by the CEO of the organising charity as genuine and 'not just a photo op'.