BMI is to be integrated into British Airways following the £172.5m deal with Lufthansa announced in December.
Up to 1,200 jobs are at risk, primarily at BMI’s head office in the Midlands.
All BMI marketers have entered into a consultation process, a BA spokesman confirmed. He could not confirm how many marketers are facing redundancy but about 150 sales and marketing staff sit in the airline’s commercial team.
Former BA marketer Stuart Beamish leads marketing for BMI.
The integration will also see all BMI mainline aircraft repainted in British Airways’ livery. Sub-brands bmibaby and BMI Regional are up for sale.
About 1,500 BMI staffers will be retained including 1,100 cabin crew, pilots and engineers based at Heathrow.
The acquisition of BMI mainline provides British Airways with an additional 56 slots at Heathrow.