Ha! I bet that title got your attention! Remember this is a toy chuff chuff site so you'll have to go elsewhere for your daily dose of smut, tee hee!
This rather wobbly animated GIF file shows off the exit through the backscene from the line that comes off the wagon turntable. In theory (at least) it should be possible to push a wagon through the gates here and swap the wagon for another. The gates here come from the back of a Scenecraft Oakhill Brewery building.