Tonia Couch has lost her appeal against the decision not to pick her for the 10m individual diving at London 2012.
The 23-year-old will still dive in the 10m synchro pairs with Sarah Barrow, but Monique Gladding will join Stacie Powell in the individual event.
Coach Andy Banks said it was unlikely there would be a further appeal.
Couch and her legal team brought the appeal as they felt that she was the best placed British diver to join Powell in the squad.
Selection rules stated that GB diving performance director Alexei Evangulov could use his discretion to pick a second diver behind the winner of the British trials.
Banks had considered taking the appeal to the Court of Arbitration for Sport, in Switzerland, if it failed, but he says that is now unlikely.