Until 2020, it exclusively represented Cabin Crew on Eurofleet and Worldwide fleets at London Heathrow airport.
[1] With an office at Heathrow Airport, it provides year-round 24 hour support, with a secure website service for members and an emergency number for operational issues.
BASSA retains its position as one of the largest branches of any union within the UK.
For over a decade Unite directly represented British Airways' fast-growing new entrant Mixed Fleet employees, which limited the scope for increasing BASSA membership at that time, because its constituent Worldwide and Eurofleets were not able to recruit new crew since 2008.
The current Branch Chair is Marie-Louise Elliott (Weezie), a BA Inflight Manager.