Character mistake: When Mickey and Emma are trying to get access to the university labs, they claim they are working for Ofsted, and are investigating exam manipulation allegations. In fact, Ofsted have never been responsible for supervising/investigating universities - they only cover places of education up to the age of 18. The Ofsted equivalent for universities is the QAA.
Continuity mistake: When Mickey seduces the MI5 agent, when she says to him, "You know she wanted to screw you?", Mickey has his hands on his hips. However, in the covert video recording of that same meeting (shown at the end of the episode), Mickey now has his arms crossed at the same point she makes that comment. (00:32:44 - 00:53:10)

Continuity mistake: At the end of the episode, the final glass on the tray shifts position. First, it's directly at the front of the tray in the middle, but then it shifts to being on the left-hand side. The position of the cork and the foil also shifts. (00:57:44)
Character mistake: Ash Morgan tells the grifters that "Anxious" has a basement flat in Camden, and he sends Sean there to get phoney identity papers. It is quite clear that the flat is on the ground floor, not in a basement. The front door opens onto the street.
Plot hole: The cable Emma dangles from is secured to a safe deposit box by a powerful electromagnet rigged up by Ash. When he turns off the power, which he will have to do (they can't leave the cable and magnets in place!), the whole rig will drop to the floor, setting off the alarms. Even under tension, it would be impossible to wind in the cable and magnet fast enough to stop it dropping, and there is no sign of any sort of mechanism that would allow them to try to do that anyway.
Factual error: The gadget Ash gets Shaun to hide inside the bank vault deposit box is essentially a large and extremely powerful electromagnet. An electromagnet powerful enough to support a grown woman's weight (which it does later in the episode, when Emma uses it) would require significant power: either from a mains supply of electricity (which isn't possible, given the device is locked inside a deposit box), or else from batteries far larger than what could fit inside the gadget as shown on screen.

Continuity mistake: When Mickey and Ash are sitting with Wendy in the restaurant, Mickey deliberately knocks over the jug of milk, causing a puddle of spilt milk. However, when the wide shot of the three characters is then shown, the jug is upright, and there is no puddle of spilt milk. (00:42:46)

The Fall of Railton FC - S7-E5
Other mistake: Don Coleman transfers £500,000 to the team's bank account. However, when Albert and Sean are looking at the bank account screen, it shows an opening balance of £1. After Coleman's money has been transferred in, the display updates to show £500,000. However, if there was already an opening balance of £1, the updated balance after Coleman's transfer should have read as £500,001. (00:55:31)

The Delivery - S7-E6
Revealing mistake: Eddie's bar has just burned down, and everything is ruined. However, the glasses above the bar are pristine and clean. At the very least, they'd be blackened and smeared by the smoke and soot, even if the heat of the fire hadn't destroyed them. (00:10:28)
Gold Finger - S8-E1
Plot hole: The gang plan to sell 100 kilograms of gold to their mark Dexter Gold for £500,000. In fact they show him 100 standard gold ingots, not 100 smaller 1 kilogram ingots which are about the size of a small mobile phone. A standard gold ingot weighs 12.4 kilograms. They are showing him 12,400 kilograms of gold - nearly 12 ½ tonnes! First, Gold is an expert. He would know right away that they couldn't possibly be offering 12 ½ tonnes of gold for half a million pounds. Nobody is that stupid - that amount of gold would be worth two hundred and fifty million pounds! Secondly, he would be aware of the difference between a standard 12.4 kg and a one kg ingot. Thirdly, they have the fake gold stacked on an ordinary wooden pallet. That amount of gold (or anything else) would crush it like tissue paper - and it could not possibly be transported in an ordinary Army truck like the one shown.
Gold Finger - S8-E1
Continuity mistake: When talking to Sean, Ash says that Liverpool play like a "bunch of girls" (not realising Sean is recording him saying this). However, when Sean subsequently plays the tape, in the recording Ash now describes a team as playing like a "load of girls" instead.
Curiosity Caught the Kat - S8-E3
Factual error: (Spoiler alert) At the end of the episode DCI Wainwright arrests DI Fisk on a charge of "corruption." As a senior police officer she would know there is no such charge, and the word "corruption" is far too general a term to be used as a criminal charge anyway. Fisk would be charged with "Misconduct in public office contrary to section 1 (1) of the Criminal Law Act 1977."
Character mistake: While investigating the "robbery" at the art gallery, DS Rivet enters the sterile crime scene without wearing gloves. He not only picks up a vital piece of evidence - a discarded receipt - with bare hands, he allows the salesperson in the shop it came from to handle it, too. Not only has he hopelessly contaminated the crime scene, he has made an important physical artifact useless as evidence.
Ding Dong That's My Song - S8-E5
Character mistake: When footage of Dale's gameshow is shown, the announcer states that it is coming to viewers live on a Friday. However, Ash later states that the show was shown to viewers live every Saturday.





