Mystery solved.

Anni Dewani's murder was the result of a tragic mix up!

It was not her husband Shrien Dewani (left) who placed the order with the contract killers. It was Labour politician Sadiq Khan (right) using his mobile 'phone while driving. He was trying to order a takeaway and dialled a wrong number. The footage from the hotel is actually Mr Khan berating the taxi driver for turning up twelve hours late, still without his pizza.

Here's the conclusive bit of evidence: