Pros
I have worked at NCC Group Singapore for almost 3 years. It is longest company which I worked for during my 7+ career in offensive security. I worked with NCC Group Australia closely together too. Everyone from Singapore Office, UK office, Spain Office and Australia office are very friendly. I had opportunity to meet with NCC Group Spain colleagues too in person. They all nice and very helpful. My favorite colleagues during my entire career are from NCC Singapore and Australia! Senior Leaders such as NCC Group APAC, UK have extensive knowledge of cyber security and they are experts in the domains. If I have a chance in the future, I would like to work there again.
Cons
No cons - all is good. Some competitors from UK want to bad mouth and attack reputation of NCC Group. They are just jealous of NCC.