This is the list for single sales of 2015 so far. Thanks to Charter2000 from UKMIX:
01 - 4,67 - UPTOWN FUNK - Mark Ronson
02 - 3,30 - THINKING OUT LOUD - Ed Sheeran
03 - 2,72 - SEE YOU AGAIN - Wiz Khalifa
04 - 2,70 - SUGAR - Maroon 5
05 - 2,19 - LOVE ME LIKE YOU DO - Ellie Goulding
06 - 1,86 - EARNED IT - The Weeknd
07 - 1,85 - TAKE ME TO CHURCH - Hozier
08 - 1,84 - FOURFIVESECONDS - Rihanna and Kanye West and Paul McCartney
09 - 1,84 - SHUT UP AND DANCE - WALK THE MOON
10 - 1,63 - GDFR - Flo Rida
11 - 1,58 - TRAP QUEEN - Fetty Wap
12 - 1,56 - BLANK SPACE - Taylor Swift
13 - 1,42 - STYLE - Taylor Swift
14 - 1,34 - LIPS ARE MOVIN - Meghan Trainor
15 - 1,30 - HONEY, I'M GOOD. - Andy Grammer
16 - 1,25 - CENTURIES - Fall Out Boy
17 - 1,20 - TIME OF OUR LIVES - Pitbull & Ne-Yo
18 - 1,15 - SHAKE IT OFF - Taylor Swift
19 - 1,13 - WANT TO WANT ME - Jason Derulo
20 - 1,12 - TAKE YOUR TIME - Sam Hunt
21 - 1,09 - BAD BLOOD - Taylor Swift
22 - 1,09 - CHAINS - Nick Jonas
23 - 1,05 - GIRL CRUSH - Little Big Town
Slay i guess