" 

 :::Difficult choices. Personally I have only watched and taken interest in one series (series 8) of the program, it both distances me & biases me. From series 8 as an example Two Shoes, Johnny Robinson both had songs that DNC, while the Risk's (who came 9th) 'Missiles' charted at 60 on the official UK chart & Janet Devlin who came 5th and was very popular during and after the show - her song long awaited 'Wonderful' failed DNC on the main UK official chart. Two Shoes and Johnny Robinson are easy, but what about the Risk and Devlin. I guess we ought add the Risk's song, but is  Devlin's DNC of sufficient interest.   

 ::::(separately when I have time I/somebody need to check the claims on two Wikipedia pages for Franki Cocozza's 'She's Got a Motorcycle' chart success) "