David and Celia Barlow were married in South Africa on Saturday and were killed by a group linked to Islamic State

Tributes have been paid to a couple who were killed on their honeymoon in Uganda in a “cowardly terrorist attack”.

A British businessman, David Barlow, his wife Celia, a South African-born hotel executive, and their Ugandan guide were driving through the Queen Elizabeth national park on Tuesday when they were attacked and killed by a group linked to Islamic State.