The large, bold red text 'BACK' against the vibrant yellow background.

The video displays a bright yellow background with large, bold, red text. The text appears in stages. First, 'BACK' is shown. Then, 'LABOUR' appears below it. Finally, 'STOP REFORM' is displayed within a white rectangle. The bottom of the screen has smaller text indicating promotion details. The pacing is slow, with each text element appearing and remaining on screen for a few seconds.