Fewest Weeks on UK Singles Chart

One week at number one (list less than 7 weeks)

 * X Factor Finalists 2011 feat. JLS and One Direction - Wishing A On Star [4 weeks]
 * The Justice Collective - He Ain't Heavy, He's My Brother [5 weeks]

Two weeks at number one (list less than 12 weeks)

 * X Factor Finalists 2010 - Heroes [7 weeks]

Who was ahead of the song who was number one when it entered in it's second week (list less than 15 weeks)
(Example: N1 is number one and N2 is number two, and the following week N2 is at number four and N1 is at number six)

Number 7 (list less than 5 weeks)

 * Leona Lewis feat. Childish Gambino - Trouble [4 weeks]

Number 9 (list less than 5 weeks)

 * Precision Tunes - Payphone [3 weeks]

Number 10 (list less than 5 weeks)

 * Wet Wet Wet - Love Is All Around [2 weeks]

Top 10 by artist

 * Amelia Lily: You Bring Me Joy [Number 2, 9 weeks]
 * JLS: Proud [Number 6, 4 weeks]
 * Lawson: Taking Over Me [Number 3, 7 weeks]
 * Labrinth: Last Time [Number 4, 8 weeks]
 * Leona Lewis: Trouble feat. Childish Gambino (see above) [Number 7, 4 weeks]
 * One Direction:
 * As main artist: Gotta Be You [Number 3, 7 weeks]
 * As featured artist: Wishing On A Star by X Factor Finalists 2011 feat. JLS and One Direction (see above) [Number 1, 4 weeks]
 * Taio Cruz: Troublemaker [Number 3, 8 weeks]
 * The Wanted: Gold Forever [Number 3, 9 weeks]
 * Wet Wet Wet: Weightless (see above) [Number 10, 2 weeks]