Corrected entry: When James drops Helen off after their date, he says "bring something warm on Saturday, it will be cold on the water." Yet Helen is able to apply for a small business loan, receive a letter of approval by mail and paint her new business' office all before the scene when she goes to watch James in the crew race on the river.
Corrected entry: Just before the split into the two realities right at the beginning, Helen goes through a ticket gate at a London Underground station. On those ticket gates it's compulsory to put your ticket through to make the doors swing open and the ticket pops up on the other side. However if you watch closely, her ticket never leaves her hand, the doors just open miraculously.
Corrected entry: In the scene where Helen is in the pub after dumping Jerry, you see James and his companion leaving the pub and as soon as they walk out the door, Helen's friend Anna walks in, but then a minute later you see James and his friend wave to her and walk out. It seems that they have left twice.