Anderson Lim was the youngest person to represent Brunei at the London Olympic Games at age 16. He had not taken part in any previous Olympic Games. Lim qualified for the Games by being awarded a universality place by FINA because his fastest time of two minutes and 6.40 seconds did not reach the "A" (Olympic Qualifying Time) or "B" (FINA/Olympic Invititional Time) standard entry times for the men's 200 metre freestyle. It marked Brunei's first appearance in Olympic swimming competition. He was drawn in the contest's first heat on 29 July, finishing third (and last) of three swimmers with a time of two minutes and 2.26 seconds. Lim's time established a new Bruneian national swimming record. Overall he placed 40th (and last) of all competitors, and was unable to progress to the semi-finals. Lim finished 14.71 seconds slower than the slowest athlete who qualified for the later stages.