Continuity mistake: Luke McNamara is handcuffed behind his back at the police station but as he is loaded in to the ambulance he mysteriously is cuffed in front. [The handcuffs inside are normal police issue handcuffs and outside as he's getting into the ambulance they're attached to a belt, normally used for criminals they consider dangerous.]
Continuity mistake: When Lucas is being handcuffed every time it switches shots different police are holding him.
Continuity mistake: During the rowing scene when everyone is racing, the camera goes out to a long shot of all the rowboats and you can see one of the film crew lying down in one of the boats. It can't be the cox - in an eight (which is being used here) coxes can only be seated at the back of the boat. It is considered too dangerous to make an eight a 'front end loader' as he is not as aware of his surroundings.
Continuity mistake: When Oxford and Cambridge are racing, one of the gates(oarlocks) visibly snaps. Yet in the next scene, the gate has been mysteriously repaired to its former condition.