The UK has an aging population. Potential opportunities for growth as older generations have more time to spend on leisure activities such as international travel.
Increasing unemployment in UK thus also increases bargaining power as an employer.
The social and cultural influences on business vary from country to country. British Airlines serves a wide range of global destinations, carrying passengers from many nationality, religion, language, etc. If it has no clear idea of cultural issues of destination countries, this could affect badly the business. Example, no meal that has pork can be served in fight to Muslim countries.
Increase in airline crashes might result in people being reluctant to casually travel by place due to fear of death.