Benedict Cumberbatch got into a heated roadside argument in central London after a fellow cyclist called him “deluded”. The Sherlock star was cycling near London’s King's Cross station on Tuesday (5 May) when he clashed with a masked man and accused him of “verbally abusing” him. A passerby told The Sun that he had seen Cumberbatch, 49, riding his cargo bike in the cycle lane, with the other cyclist following closely behind him. In footage filmed by the same onlooker, Cumberbatch is seen walking over to a man in red trousers, whose face is covered. The conversation reportedly went on for 10 minutes, with the pair blocking the bike lane while arguing. Benedict Cumberbatch was involved in a 10-minute row with a cyclist in London (Getty) In the video, the other cyclist is heard calling Cumberbatch “deluded”, saying: “You’re lying.…