Mike Aquilina at Way of the Fathers reports a BBC news item. It seems that a burial has been found in London (Londinium), of a grave from the early 5th century. The burial was at St. Martin-in-the-Fields church, near Trafalgar Square.
The man was buried in a Roman sarcophagus with a bit of Saxon pottery. Test show that he died between 390 and 430AD. The BBC call him the “Last Roman” and indeed he must have been one of the last Roman inhabitants; someone who saw the legions leave and the barbarians arrive.