Other mistake: Catherine lives in apartment 1 on the first floor, but she goes in to apartment 4 on the second floor and right in front of Neil's apartment. (00:06:26 - 01:10:28)
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Continuity mistake: When Simon Pegg jumps from bridge to water, he has light blue sweater. Just before hitting the water, it's a lot darker. Either the jumper is a stuntman in different clothes, or the sweater is wet already. (01:15:25)
Continuity mistake: During the dinner scene in Simon Pegg's apartment, watch Kate Beckinsale's bowl of soup. There's a large bubble stuck to the rim and the location changes back and forth between shots.
