The abandoned subway station, which serves as the Turtles' new lair, is based on the real life "City Hall" Station of the former Interborough Rapid Transit company in New York City. Although the station itself is decommissioned, the track on which it is located is still active.
When Keno is running from The Foot's Soldiers in the junkyard aka. The Foot's HQ, you see him fighting against two of The Foots soldiers, and another guy running in the back, ready to do jump over the junk in front of him, and do a saltomortale. Before the saltomortale, he jumps up into the air, like he is about to jump onto a trampoline.
During the junkyard scene, just before Donatello is thrown, you can clearly see that Leonardo's katanas are in their sheaths. After he is thrown the shot cuts back to Leonardo fighting and his katanas are no longer there.
At about 37:58 when Shredder tells Tatsu to remove the bar because "it's time they learned who their master is", the shot goes back to show Tatsu from the front, where his lips are clearly moving, but there is no sound.
What are the differences between the old British VHS and the uncut British DVD?
A
Due to the usage of martial arts weapons two scenes in the old British VHS were cut. These cuts were waived for the DVD release of the movie. Nonetheless a detailed comparison between both version with pictures can be found here.