Some options to consider
If your schedules allow, it is a good time to take part time studies whilst in national services. give u a heads up vs your peers. there are several universities offering part time degree which requires you to attend 2-3 times week days evening classes
you can consider university of london with SIM
http://www.sim.edu.sg , they are 100% examination based , so u need to study and make sure you attend all the tutorials.
For alternative which are 100% coursework and assignment based Vs 100% examination based, you can consider the following
university of Derby - direct honors degree in accounting n finance / business management (
http://asm.edu.sg/index.php/university-of-derby-uk/
or you can consider kingston university london. if you are NS, you might be eligible for SAFRA scholarship which means that the total fees might be less than 10k only
http://www.london.edu.sg
But u need to be mentally prepared, the courses are intensive and they requires commitment and focus. Good Luck

