The Foreign Office has said it is "aware of reports of the death of a British national" in Afghanistan and is urgently looking into the matter.
It follows a suicide bombing near a Lebanese restaurant in the capital Kabul which killed 13 or 14 people.
More top news
Ex-Dragon's Den star Doug Richard has pleaded not guilty to a string of child sex charges after appearing before the Old Bailey.
The independent child sexual abuse inquiry has named the first institutions facing investigation - including local councils and the Church.
The Queen has paid tribute to both her husband and son in her opening speech at this year's Commonwealth summit.