International schools (Singapore)

Hi, we are about to move to Singapore lin December and my children (6 and 3 years old) are due to start school in January. We now desperately try to get them into one. As we plan only to stay for 2 years we need to get them back into he British system without to many troubles. So far Tanglin, UWC are a no go and Chatsworth has a waiting list. Can anybody give me some reviews about Eton House, St Joseph's and German International School. Or any other suggestions? Thanks al lot!!