By Joel Leaver Filming of Call the Midwife was “thrown into chaos” during production of the next episode, which sees several characters venture to the seaside for a day out. Some cast and crew members of the BBC period drama are understood to have spent time filming at a beach in West Sussex for the fifth episode of the new series. The upcoming episode is scheduled to be broadcast on Sunday evening. The Mirror previously reported that a cast member had said they ended up getting hypothermia. Other remarks about the filming have now been shared by colleagues, such as the suggestion that someone…