Secondary school teacher Lucy Preston poses for a portrait during an interview with Reuters, ahead of strike action, at her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston reads with her sons, Sufjan and Elias, during an interview with Reuters ahead of strike action, at her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston reads with her sons, Sufjan and Elias, during an interview with Reuters ahead of strike action, at her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston plays with her sons, Sufjan and Elias, during an interview with Reuters ahead of strike action, near her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston poses for a portrait during an interview with Reuters, ahead of strike action, at her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston plays with her sons, Sufjan and Elias, during an interview with Reuters ahead of strike action, near her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston poses for a portrait during an interview with Reuters, ahead of strike action, at her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston plays with her sons, Sufjan and Elias, during an interview with Reuters ahead of strike action, near her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston plays with her sons, Sufjan and Elias, during an interview with Reuters ahead of strike action, near her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston plays with her sons, Sufjan and Elias, during an interview with Reuters ahead of strike action, near her home in London, Britain, January 30, 2023. REUTERS/Toby Melville

Secondary school teacher Lucy Preston reads with her sons, Sufjan and Elias, during an interview with Reuters ahead of strike action, at her home in London, Britain, January 30, 2023. REUTERS/Toby Melville TPX IMAGES OF THE DAY

Secondary school teacher Lucy Preston poses for a portrait during an interview with Reuters, ahead of strike action, at her home in London, Britain, January 30, 2023. REUTERS/Toby Melville TPX IMAGES OF THE DAY

Secondary school teacher Lucy Preston speaks during an interview with Reuters, ahead of strike action, at her home in London, Britain, January 30, 2023. REUTERS/Toby Melville TPX IMAGES OF THE DAY