NEO,
You're right about Bristow employing fewer Brits. From what I see and hear both they and CHC are employing many more pilots from the Far East. Because they often come from countries poorer than Nigeria and from a culture which seems to just accept what they are told to do by their managers, I suppose the bosses like it - a compliant workforce willing to work for lower wages.
Wherever Doc's going it's certain to be an improvement - unless it's ADA