London 2012: Athletes start training at Surrey Sports Park
Olympic athletes from around the world are arriving at the University of Surrey to prepare for London 2012.
The Nigerian and Singaporean Olympic teams have started preparing for the Games at the Surrey Sports Park.
On Sunday swimmers from Estonia join their Filipino and Mauritian competitors at the Guildford venue.
Olympic and Paralympic athletes from Argentina, China, Dominica, Malta, Philippines, Spain, Sweden and the USA will also train at the centre.