As Scotchie says above, there is a superb set of photos on Dover Ferry Photos Forum from my old chum Marconista, plus additional information from the pilot who attended for her departure from Harwich, quote "She was filmed under the white cliffs as day broke for the new Sherlock Holmes film. She left Harwich on Sunday morning bound for Tilbury via Clacton, then on for her rendezvous at first light off Dover. Glad she made it. It looks like the call at Dover was for bunkers which they originally planned to take at Tilbury, but plan "A" didn't work, also they had seven film cameras on board which were probably landed at the same time! I expect Capt Ian Clark enjoyed his fleeting visit to Dover, being an ex DHB employee. I piloted her out of Harwich on Sunday morning which I always find a treat, but it was strange that the previous ship I was on was Emma Maersk! Certainly a job of contrasts!"
http://www.doverferryphotosforums.co.uk/viewtopic.php?f=12&t=1310
I took a few rather indifferent photos of her stooging about off Dover, see fotopic site below:
http://shipsintheportofdover.fotopic.net/c1906141.html