Ticketing question - help please
 

I'm planning a trip to Thailand in December and have got award seats from LHR-SIN (on BA). I checked the Thai Airways website and for S$884 I can get biz class seats SIN-BKK-CNX-BKK-SIN - which seems like great value. However, to book online, I then need to pick up the tickets from the ticket office in SIN within 72 hours. This is a problem, as I live in London.

Does anyone have any suggestions how I can overcome this problem. I did call Thai Airways in London but they can't issue those tickets from here. Their lowest fare was more than double. Would a Singapore based travel agent be able to issue the tickets and send them over, or are those rates internet only?