''The selection in South Africa is not merit-based. It doesn't give white people the fair opportunities they should have,'' he told the BBC Sport.
''So I saw my opportunities in the UK, where selection is merit-based. I'm a British citizen and I've been over here for five years and it's the best decision I've ever made.'' ''It's been a rough ride and a learning curve, but I think I've come out of it a well-rounded person.'' Pietersen, who aims to become a full fledged allrounder in the years to come, admits that he has been lazy with his off-spin bowling and is looking to improve it.
''I've spent a heck of a lot of time on my fitness, on the mental side of the game and on my batting, but it is about time I spent some time on my bowling. Spin it like Shane Warne,'' he joked.
''I'm going to be working really hard to become an all-rounder,'' the Ashes hero said.
A sociable person, Pietersen said he loved going out with friends but not if it threatened to affect his on-field perormance.
''I enjoy having a good time with my friends. I'm a hyperactive person, I'm always up and about but I don't go out and party if it's detrimental to my cricket,'' he said.