The agent for the South African Paralympic gold medallist Oscar Pistorius says the athlete will not compete again this year while he awaits trial for murder.
The Athletics Integrity Unit, which polices anti-doping in athletics, lists 68 Kenyan runners currently banned from competing, including Wilson Kipsang, a former Olympic medallist and world-record holder.
But the 67 medals at this year's Games in Rio and 147 at the Paralympics meant that the GB medallists' reception at Buckingham Palace was a crowded and happy event.