Members of British Airways' mixed fleet cabin crew began a six day walkout on Sunday to protest their low wages. The crew members are being represented by Unite, and some currently earn as little as £12,000 a year, plus bonuses and flying time. The airline has imposed large sanctions to dissuade the crew members from striking, including docking bonuses for two years and taking away travel discounts for a year. The mixed fleet cabin crew members have gone one strike two previous times, which caused 68 cancellations over five days.
See "British Airways cabin crew begin six days of strikes", Gwyn Topham, February 6, 2017