The British Olympic Association confirmed his addition to the 2012 team "following an appeal against his non-selection". This means that three challenges against Scotland's European silver medallist Lynsey Sharp were among 10 thrown out. The final track and field squad is 77 strong, and Team GB now has 542 competitors from 26 sports.
Sharp's rivals, Jemma Simpson and Emma Jackson, had intimated that they had lodged appeals, while a third, Marilyn Okoro, made a social media comment to the effect that she had lost round one but intended to challenge further. UK Athletics confirm their process allows no further avenue of appeal and further challenges could only be in court and Olympic entries close tomorrow. Athletes who went public about appeals were in breach of the UKA process.
Richard Kilty, the 200m runner, lost his case and has claimed he will now look at competing for Ireland.
"When the Olympics are on I guarantee I am going to be abroad running faster than every member in the British team just to rub it in their faces," said the 22-year-old. "I have ancestors from Ireland and that's a route I may go down."
Kilty has run quicker than James Ellington, whose win in the trials sealed his place, but finished last in the trials final after suffering from hamstring cramps.
He added: "I've worked very hard this year, I was 100% certain I was going to get the third spot.
Warburton was successful in his appeal having narrowly failed to obtain a second A standard at the European Championships.
He said: "I had a missed call on my phone and had to call Ed Warner [chairman of UK Athletics and the chairman of the appeals panel] back and he told me I was on the team."