You will have to go through Bristow Redhill I'm afraid. The International ops Manager is John Black.
Bristow Helicopters Limited
Redhill Aerodrome
Redhill Surrey RHI 5JZ
UK
+44 (0) 1737 822353 tel
+44 (0) 1737 822694 fax
With your citizenship etc you may be better off contacting COHC direct in Shenzen but I don't have the numbers for them. They look for people during the Typhoon season and you might get to stay on.
Good luck
LE