When Sid and Tony return the coffin in the background, they leave the hearse boot (trunk) door open. When Chris' father and the funeral guy go outside, the hearse boot (trunk) is shut.
When Chris' father is telling Sid not to come to the funeral, the door behind Sid, which is open at first, becomes suddenly closed at the end of the scene. In fact, Chris' father opens it when he leaves.
Anwar would not have been allowed on the bus to London with Maxxie and his boyfriend without first buying a ticket.
Tony would not have been able to get a passport for Sid for his trip to New York City.