The video for 'There is a Light' is very similar to another Smiths song (Morrissey and clones cycling around Salford)that was released as a single, I'm afraid I can't remember the song name.
The song which can be found on The Smith greatest hits on DVD where they are cycling around on the bikes is " Stop me if you think you've heard this one before" so i think that the other video to "There is a light" has been doubled up with "Stop me" vid