When Batman drives up to "The Three Bells" pub there is a blonde in a hot-pink dress sitting next to a man on a park bench. They get up and walk away from the pub to the left. Then, just as Batman is about to enter the pub they come out.
There is a sign for "Lady Easterlands Jeweled Easter Eggs" - on it there is a missing apostrophe on Easterland's, and Jeweled would be spelled the British way: Jewelled.
After Robin cuts the mooring line to keep the girls from getting on the school boat, the footage showing the boat "drifting" away clearly shows a boat under power. Because drifting vessels are being carried by the flow of the water they very rarely leave a wake, even if they are drifting bow first.