Hi I have the following email address for Cabin Crew recruitment at BMI, give it a go ....
BMI CC recruitment
For Ground jobs the only option seems to be mailing in your CV:
customer service recruitment
personnel department
bmi
Ground Floor
Queens Building
Heathrow Airport
Hounslow, Middlesex
TW6 1DY
Tel: 0208 990 5336
good luck with the app
