One shot shows a stagehand turning a winch to lift Mary Tudor when she's playing Cupid. When she's being lowered, a shot shows the stagehand turning the winch in the same direction as previously.
At 1:15:23, one of King Charles's chemical experiments causes the shed he's conducting it in to explode, but it's obvious when it collapses that no-one is actually inside it. Then, in the following shot, the royal family stumble out, although the shed they stumble out of still has three walls standing and we have already seen all four fall down.
Charles II and Edward Hyde are shown discussing the kingdom's precarious finances in a scene filmed in the Great Hall of Sutton House. While the house was built in 1535, the portrait of Lady Sadleir, shown hanging behind Charles II, was created much later. Painted by Mary Beale in 1687, it could not have been viewed by the King, who died in 1685.