Apply for China visa from Singapore (U.K. Passport holder)

Hello,
I am currently in Singapore visiting my Boyfriend. I am on a tourist entry permit in Singapore (90 days), but we want to travel to china at the end of October. Can I apply for it from Singapore? If yes, which type do i apply, and how do I apply quickest and easiest?
Also - do I need to book flights and accommodation before applying for the entry permit?
Thanks
Bex