Continuity mistake: Before Pollyanna arrives on the train, when Jimmy Bean pushes the metal hoop down the road, two girls stop their doll carriages right beside each other and grab their dolls. Next shot, their carriages are about 4 ft. apart wide enough for Jimmy to run between. (00:01:10)Super Grover
Continuity mistake: When the Jeep at the head of the army convoy starts off again, after being stopped at the temporary traffic lights set up by the crooks, the external shots show the Jeep passing the traffic lights. But the next shots from inside the Jeep show them passing the traffic lights a second time.
Revealing mistake: Midway through when Ian Carmichael and his girlfriend are dining at a restaurant with Terry Thomas, they are talking and looking at the menu. The table is laid with cutlery and wine glasses - ready to eat. During their conversation there is a shot of Ian Carmichael only talking and smoking but there is no cutlery and the wine glasses have been replaced by a brandy snifter, obviously after the meal. The next shot shows the whole table with the correct pre-meal setting. When they have finished the meal, the table setting is as it was in the earlier shot.