From
Careers Home - British Airways
'Please note the following information if you have made a previous application to us. We cannot accept a new application within:
6 Months if you were unsuccessful at initial application screening
12 months if you were unsuccessful at any stage of testing/interview/simulator assessment. You are welcome to reapply 12 months from the date you attended initial aptitude testing
When you proceed to apply
Have you previously applied for this role or any other Pilot role within the last 6 months
Note any other role which in your case is LH DEP
Please note that only one application can be accepted within a rolling 6 month period.
Have you attended the assessment stage in the last 12 months
However as we know BA does change policy from time to time, such as inviting people before the 12 months has elapsed.
I too would like another shot but have to wait 12 months, but to put your mind at rest why not phone BA recruitment, they seem always happy to help.