The Professional Pilots Union, which represents around one third of Virgin Atlantic pilots, claims that its members are planning to strike over the holidays. According to the union, the strike is in response to the union not being included in talks regarding changes to pilots’ benefits. Pilots plan to strike from December 22nd to Christmas day. This strike would be the first of many that the union will engage in, in order to attempt to resolve the issue. A union spokesperson has claimed that the employer has repeatedly refused to recognize the union and include its members in decision-making processes.
See "Virgin Atlantic pilots plan Christmas strike", BBC, December 7, 2018