Gavin calls Stacey and says its 11 o'clock but when Smithy turns up to see Gavin his watch says 9:30am.
The Tokyo Stock Exchange opens at 1.30am GMT and closes as the LSE opens. Nessa would have to wait a lot longer than forty minutes for it to open. By which time the LSE would have been closed eight and a half hours, so she would not have been able to trade her shares.
When Doris asks Gavin to help her to her house, Stacey can be heard saying "thanks Gav," however, her lips never move as she is seen eating.