Hi law,
I just joint them few mths back as Cheong Kyum Kwan Singapore just newly set up in Singapore this year and is only place in Singapore that teaches Ki Hapkido. Cheong Kyum Kwan in Korea are very well recon. and the grand Masters himself is also the Korea Hapkido Federation National Demonstration Team member. Saw their demo in video, dam good! He is also the instructors for some world amry special forces. FYI, my current coach are also the formal S.T.A.R. team unit. He left the force 2 years back and started teaching self defence and now into this afer he got the Master level from Korea. As for the diff. between Japan Akido & Korea Hapkido, well Hapikdo are the brothers art from Aikido, only that Korean modi. the art and become the modern combat skill used in most of the world army special forces. Hapkido is an extremely effective and practical form of self-defence. It is suitable for anyone, young or old, men and women to practice this art, regardless of physical weight and strength. That's why old man like me chose this art. Anyway, you can visit CKKS website below to understand more :
http://www.cheongkyumkwansingapore.com/
Anyone also can pay them a visit at their training centre. Usually, they will have training on Thur & Sun 7-10pm.
Rgds