Every month Joy Kyakwita presses a button on her phone and does something in common with millions of other people across the globe: she sends money home.

Ms Kyakwita, a London-based lawyer, gives a third of her salary to her family back home in Uganda, including paying money for school fees for her brothers and nephews.

“I believe that when you pay for them to go on a good course, then there is a good chance of them becoming employable,” she says. “And if they are employed then they will be able to help their siblings as well.”