Now correct me if I'm wrong, but I can't remember anywhere in JAR-OPS 3 any referal to a "Chief pilot"!!! for AOC application.
There must be:
Accountable manager
Crew training manager
Flight operations manager
Technical manager
Quality manager
In small outfits, one person can hold more than one post.
Now of course the UK CAA can implement stricter rules than those required by JAR but really a CP is not required although most operators designate someone to be CP.