Originally Posted by Graham
There is another possibility why the Mirror was seemingly late, and that was in those days it was technically contempt of court to report on the arrest and naming of a person prior to charges being made.
There were (and still are) restrictions on what you can report after arrest. Woffinden describes how Justice spent a long time tracking down the Daily Mail version with Alphon's details, before they revised the story to report on Alphon's arrest and deleted the background information.
My first reaction was that the Mirror front page posted was their first edition - the equivalent of the Mail first edition that Justice tracked down. However it is marked +++, which I think means it is the third edition.