i saw that interview too, and i thought her voice was ok, better now than it was a few years back, with her being born in the east end of London she didn't stand much chance of being anything other than a cockney, i personally think she is a brilliant singer/song writer, which shows as when she brings an album out, it sells in record time, and also she has a very good business mind along side her singing career, which also brings her in millions of pounds as well, not bad for a cockney girl ! but each to there own.
She's not a cockney , she was born in Tottenham and raised in Brixton.....don