Chagos Islanders v the United Kingdom (application no. 35622/04) was a case before the European Court of Human Rights decided in 2012 by an inadmissibility decision. The court, by a majority, ruled that as the Chagossians had accepted compensation from the United Kingdom government they had effectively renounced their "right to return" and as such their case was inadmissible.
References
Chagos Islanders v United Kingdom Wikipedia(Text) CC BY-SA