Continuity mistake: 5/7/16 When Sharon and Buster arrive at the mansion where Gavin is holding Kathy, Sharon drives past Gavin's car which is parked opposite the mansion's front door. The angle changes to inside the car to show Sharon and Buster talking then to outside of the car and a long shot of the mansion's front door, Sharon drives past Gavin's parked car again and parks outside the front door. The following shots inside and outside of her car show it parked in a different position in relation to Gavin's car.
Revealing mistake: Episode aired 06/05/2016. Steve (Ronnie's stalker) pulls out a folder of newspaper clippings concerning Ronnie's baby-swap case. It shows up close an "article" which is seemingly legit when reading the first few lines...only to show the same sentence repeatedly, merely the information having been rephrased. Either the Eastenders-verse bears some rather incompetent and careless journalists, or the writers of the soap were simply too much too bone-idle to write up even the most mediocre of articles. (00:28:05)
Factual error: 7 Sep 2015: Several errors with the soldiers in the recruiting office. They wear their berets almost flat on their heads and not pulled to the side - no self-respecting British soldier would wear his beret this way. The berets have tails, which British berets do not have. Lee salutes a sergeant major - he's an experienced soldier so would never do such a thing and would get an earful if he did. Lee talks about his platoon in Afghanistan - he's in the Royal Engineers, who have troops instead of platoons. In fact, all the soldiers are from the RE - in reality recruiting offices are staffed by soldiers from a mix of corps and regiments.
Audio problem: In the 9/11/2010 episode there is a scene where Alfie and Roxy have just got back from selling her things to pay for Ronnie's wedding. There is a different audio range from normal speech - Roxy's voice comes across rushed and too loud compared to the other lines she speaks. Also her mouth does not move in sync when she says "So how you feeling about tomorrow, are you nervous?" (00:24:15 - 00:25:00)
Continuity mistake: 12/4/13: When Sharon claps her hands to get everyone's attention to tell them that her and Jack are not getting married, look at Kirsty - she is looking at Sharon over her right shoulder, but when the angle changes Kirsty is facing forward, and then turns her head to look at Sharon over her right shoulder again.
Character mistake: When Pat goes to Roy Evans' car showroom to complain about the dodgy car he sold to her son David, she asks Roy if he has any children. Roy replies that he has two sons which was true, but at this time Roy didn't know he had a second son, Nathan, conceived years before when Roy had an affair with his secretary Doreen. He only found out years later when Nathan turned up to tell Roy that Doreen was terminally ill. When Roy was speaking to Pat he only knew about his first son and business partner Barry.
Plot hole: James Willmott-Brown's son Luke hasn't been seen since being bundled into the back of a van by Phil's "heavies" after he assaulted Ben, although Willmott-Brown has commented on Luke's disappearance to his daughter Sophie as they all work together. Luke is the favourite of his three children, you'd think he would be concerned as to his whereabouts, especially around Christmas time.
Factual error: In the episode where Kat is flying off to Ibiza, she is seated in an over-wing exit seat. These seats are reserved for ABP's (Able Bodied Passengers) which mean no children or infants under the age of 14 can sit there. Once the plane has started boarding, check in closes for that flight and no further tickets can be sold for that flight. The captain requested pushback, but, certain conditions around the aircraft wouldn't make this possible. Stairs still in place, ground power was attached and once the door had been closed Alfie would have not under any circumstances been allowed onto a airfield to climb the stairs. If he did, he would have been escorted off.