The following news story appeared on the T&M homepage:

 

  FIRST U.K. SUBS TOP OF THE POPS APPEARANCE REPEATED ON BBC4  

Set your record buttons for this Thursday - 19th June 2014 - folks! 
BBC Four are currently showing Top of the Pops episodes every week for each corresponding week of 1979. So this week we get to see the first appearance of the U.K. Subs... Should be interesting to see the whole show instead of the individual performance on YouTube, giving a bit of context to the band's TOTP debut...
You can also view the programme for a week afterwards on the BBC iPlayer: