Singer will play additional shows in Cardiff, Glasgow, Manchester and London
Singer lines up UK dates for spring 2011
Stock says he 'doesn't regard' the likes of Gaga and Rihanna as pop music
JLS top the singles chart for the third time
Australian songstress is on course for her fifth Number One with 'Aphrodite'
The singer's eleventh studio effort will be released on July 5
Single 'All The Lovers' set for June release
Eight songs reportedly already recorded for record
Download set is out later this month