Originally Posted by
zen100
Anecdotes again, but my observation is that they assign FLUB to those that haven't selected a seat (typically non status holders), so they don't need to sent out as many "Your seats have changed" e-mails.
My experience is that London does it by status (GGL first. The man at the GF lounge told me that they were doing 97s first, but mine might be possible later as I was a 66. He didn’t say what the numbers meant but obviously I knew he was referring to CIV).
The return flight outstations tend to FLUB people who don’t have seat allocations, as you say.