The exchange is from some Indians and the alleged hack is also from India. It could be an insider job. I don't mean that the exchange itself is involved but maybe someone that is working with or had worked in the past with the exchange that had some inside knowledge as how and where the funds are kept. Indian police have an experience of investigating hacks in the past, I hope they get to the hacker this time too.
Hmm. What's with all the GBP and EUR talk? And the London address? There are some mentions of India in there but visiting it I wouldn't know it had much to do with there at all.
If the Indian police do a good job then more power to them. If it was the UK they'd be told to 'report it' and then it would likely be ignored.