At the end, Maxxie helps Tony write his name. But between shots the handwriting of the name written on the paper completely changes.
When Sid is checking his phone at the party, he looks at his message from "Effie", when he goes back into his inbox, this message is then listed as from "Effy".
When Sid is checking his messages, the screen reads "Effie" and "Tony". When he reads Effy's message he then goes back to the screen where Effy's name is then corrected back to "Effy"
When Tony is eating dinner with his family, his plate is shown to have chicken and vegetables cut up into small pieces. Tony doesn't touch his food and says that he doesn't want to eat, yet later on, his plate has gravy on it and the chicken has gone.
When Chris, Tony, and Jal run into Anwar, Anwar's lips aren't matching the song he's singing.