Formula One bosses set for talks with World Anti-Doping Agency as Jenson Button reveals there is a shocking lack of drug testing in the sport
Brit F1 ace incredibly told how he had not been tested for banned substances for "three or four years"

THE World Anti-Doping Agency will speak to Formula One bosses after The Sun exposed a shocking lack of drug testing in Formula One.
Last month, SunSport asked British ace Jenson Button about how frequently he was tested for banned substances.
While there is no suggestion that F1 stars were using drugs to gain an improvement in their cars, there is still a lack of testing in place.
Button said his last test was incredibly "three or four years ago" and called for more random tests.
Button told The Sun: "I have not been tested this year. I don't know of any drivers who have been tested recently.
"They used to test during the winter but random testing seems to have stopped.
"I have not had a random test for three or four years. We used to do urine tests after the races but that stopped too."
Wada have now responded to our article and say they will be urgently speaking to the FIA to "ensure its anti-doping program protects the integrity of its sport and the rights of clean athletes".
Related Stories
Button is not the only driver to express his concerns at a lack of testing, with Red Bull's Daniel Ricciardo also telling SunSport he too has not been tested this year.
The Australian however, has been subjected to a random test on Christmas Eve, yet again the test was some time ago.
He added: "If I am honest, I have not been tested this year but it is always random, so it could happen. You have to give them an hour time slot every day.
"Most athletes do it in the morning from 6-7am because you are most likely to still be in bed or their hotel room.
"They once knocked on my door on Christmas Eve, but that was a while ago, it might have been in 2014."
Ricciardo also admits he is unsure what substances he could take to actually improve his ability to drive an F1 car but admits there is "probably something out there".
He said: "I am a novice in performance enhancing stuff, and knowing how to drive a race car, I don't know what could help you, but I am sure there is probably something out there.
"At the same time it is good we are tested. I supposed it is random, so they keep you guessing, so maybe they are doing enough.
"Could they do more? Random keeps you guessing, it is good we are part of it, but whether we gets tested as much as cyclists, is up to the FIA."