The British actor, who recently became a father for the fourth time, found a novel way to sidestep reporters' questions as he walked the red carpet.
Jude, who arrived on the right of co-star Robert Downey Jr, said: "The only person I'm in love with at the moment is on my left."
Robert, who plays the title role in the flick to Jude's Dr Watson, described himself and the British star as "very much on the same page, which is a pretty eccentric page".
The pair seemed to be having a whale of a time at the London unveiling, jigging around with director Guy Ritchie in front of the rest of the cast.
Adding a touch of glamour to the event were the film's leading ladies Rachel McAdams and Kelly Reilly – both stunning in full length Grecian-style gowns.
And enjoying a night out at the screening, which opens in the UK on Boxing Day, was singer Gwen Stefani and her husband Gavin Rossdale.