7At 02:25 BST Mr Justice Goose granted "interim relief" to two Chagossian women who had brought a case against the Foreign Office.
The legal action was brought by two Chagossian women, Bernadette Dugasse and Bertrice Pompe, who would like to return to live on the islands.
Under both the current arrangement and the proposed new deal, Chagossians are prevented from returning.
Earlier this year, their lawyer Michael Polak said: "The government's attempt to give away the Chagossians' homeland whilst failing to hold a formal consultation with the Chagossian people is a continuation of their terrible treatment by the authorities in the past.
"They remain the people with the closest connection to the islands, but their needs and wishes are being ignored."