Rihanna is planning to relocate to London.The singer has sent reps from her management company to view potential properties in Kensington and Chelsea.‘She’s looking for a UK base close to her record label HQ,’ a source tells the Sunday Mirror.Earlier this month, Rihanna, 20, sparked rumours that she's to wed hip hop star boyfriend Chris Brown, 19.She was snapped sporting a huge rock on her engagement finger.