Bob opens a bottle of Newcastle Brown Ale as he and Terry sit with their chippy supper, and pours twice into his own glass. Midway through the scene (seemingly as Terry asks Bob if he means last year) they suddenly both have filled glasses - Bob's foaming alarmingly - and the bottles have moved, which suggests either an edit or retake of the scene.
When Terry accidentally presses the button in the crematorium, the conveyor belt doesn't move but the coffin still slides down through the doors.