Topping the singles chart for the 11th week in all - a tally bettered by only six tracks in chart history - and the second time in its third run at the top, Luis Fonsi & Daddy Yankee's Despacito (feat. Justin Bieber) continues to flourish but its combined sales of 40,891 (including 18,759 from sales-equivalent streams) are the lowest for a No.1 since Katy Perry's I Kissed A Girl sold 40.587 copies on its fourth week at No.1 in the ...