Continuity mistake: When Denholm is holding the picture of the A-Team, he is holding it on the left side of the frame. When it cuts to him putting it down, he is holding it on the right side of the frame.
Other mistake: When Jen gets into the elevator, it says '34th floor.' However, when Jen looks at the panel with the numbered buttons, the numbers only go up to 31.
Continuity mistake: Near the beginning of the episode, Roy is eating & drinking while the phone is ringing. Eventually he picks it up, then Moss comes in and throws him a muffin. Just before Moss walks in, Roy's coffee cup is on his right on the desk. The next shot, as he catches the muffin, the cup has instantly moved to his left. Afterwards, the cup is back on his right. (00:03:20)
Continuity mistake: Jen's tights change throughout the episode. Sometimes she is wearing black tights, other times she is wearing pale/no tights.
Continuity mistake: When Moss asks if Roy is OK, it shows Moss holding his cup by the handle. In the close-up shot of Moss, his grip is on the cup itself. In the next shot he is holding it by the handle again.
Continuity mistake: During the party down in the basement, after Moss has told the embarrassing Amsterdam story, Roy comes back in the room and realises nobody's laughing. He walks up to Moss and says, "What story did you think I meant?" Roy has a beer in his left hand. The next shot, within seconds, he's shaking Moss by the shoulders with both hands. There was no time frame for him to have put the cup of beer down. (00:22:05)
Deliberate mistake: When Roy and Moss are in Jen's office talking about her slipping up, the computer monitor disappears from her table in the wide shots so you can see the actress.
Suggested correction: It's there the whole time. It's a thin monitor and it lines up with Roy's leg, so it might have been hard to see.