Usain Bolt reckons London's thriving Jamaican community could help propel him to another monumental Olympic performance as the sprinter seeks to repeat his triple gold-medal haul from Beijing four years ago.

With less than five months to go until Bolt defends his 100, 200 and 4x100m relay titles, the 25-year-old remains characteristically relaxed and hopes his compatriots will roar him to victory.

"I've been waiting for this summer for four years so I'm going to enjoy every moment and put on a show for everybody around the world," he said.