pbr Relationship rumours are spreading about music supremo Dizzee Rascal and Aussie singer Natalie Imbruglia.br ppbr The pair were spotted Christmas shopping in Mayfair, walking the streets with arms linked.br ppbr They met earlier in the year on Richard Branson's private island and are believed to have struck up a close friendship.br ppbr Rumours spread so fast that the pair were together after they were spotted that Rascal's spokesman released a statement to completely put down the relationship claims.br ppbr Imbruglia has been linked to a host of famous celebrities since she divorced Silverchair frontman Daniel Johns in 2008.