Pope Francis has celebrated Mass in front of an audience of hundreds of thousands of Ugandan faithful.

He spoke at a Catholic shrine dedicated to Christians martyred for their faith in the 19th Century, on the second stage of his three-country trip to Africa.

The Mass marks the 50th anniversary of the martyrs’ canonisation.

According to the BBC, there were huge cheers as the Pope began the open-air ceremony at Namugongo, near Kampala.

It was where many of the 45 Anglican and Catholic martyrs were burned alive.

Their execution was ordered by a king worried about the spread of Christianity.