User blog comment:Morganaforever/Mordred's role in series 5 (SPOILERS AHEAD!)/@comment-3012002-20120602015503/@comment-4650675-20120604090430

They may have had scenes together. Actually, noone has any idea where Katie has been fiming, as she has always been filming seperately with the rest of the cast lately, so maybe they do meet, but in a place the fans cannot reach :)