Now that is a challenging photo to ID and a beautiful specimen too. I'm familiar with this species so I will let some other people try their hand but I'm impressed!
Alright well, now that someone else has chimed in, I'll jump in. Its Calliophis bivirgatus, the Malayan Blue Coral Snake. They do look very similar species to Bungarus flaviceps flaviceps, the Red-headed Krait.