At the 2008 Games in Beijing, that was Cycling where Great Britain won 14 medals (8 gold, 4 silver, 2 bronze).
Great Britain won more medals in cycling.
It is believed that Hubert Van Innis is the best athlete in the sport of archery as he has got the top scores in the Olympics. He has six gold medals, three silver medals and no bronze medals but according to a recent tally he is the best and has nine medals in total and a rating of forty two.
Tennis?
Swimming
Michael Phelps of the United States with 14 gold medals in swimming.
He won Two gold medals in swimming
In the Winter Olympics, speed skating. In the Summer Olympics, athletics (track and field).
Swimming won them 10 Medals including a Gold Medal 6 Silver medals and 3 Bronze Medals
Need to be a bit more specific as to which sport in the Olympics.
109 + swimming
The government agency UK Sport targeted a total of 48 to 70 medals, with a commitment of at least 48, one more than the team won at the 2008 Summer Olympics, and a fourth-place finish in the medal table. The 48 medal target was reached on Day 11 (7 August) and on the same day Great Britain surpassed the Beijing tally of 19 gold medals to make it the most successful Olympic Games for Great Britain since the London Games of 1908. see related link Great Britain won 29 Gold Medals 17 Silver Medals and 19 Bronze Medals for a total of 65 Medals
None of there 13 medals were won in the same event. Rowing was the sport they won the most medals in with 5