Although there is definitely more than one place to find social escorts in Singapore, I highly recommend that you simply Google for social escort agencies, as you will then find different choices all at once easily. One of the strongly recommended social escort choices in Singapore will be https://twitter.com/sgvipservices.
Anyway, the following are some of the places where you can find social escort services.
First of all, although The Straits Times advertising is considered outdated, older generation businessmen still rely on it as a form of advertising. Therefore, if you were to go into the classified sections of The Straits Times, you will be able to find advertisements by individual escorts or agencies in Singapore.
Second of all, you can try Yellow Pages although I think that is severely outdated. However, hey, you can try your luck although I personally think it is a bad idea because you cannot see any photographs of the escort girls through Yellow Pages.
Third of all, you can try Laksaboyforums. However, do note a word of caution here. Many of the services there are by illegal businesses. If you engage them and you get into trouble, then you must be prepared for it.
Finally, Google is the simplest way to search for any type of services in Singapore, including social escort services.