Serious incident to an Airbus A320 operated by British Airways on 02/01/2020 near London [Investigation led by AAIB / United Kingdom]

Preliminary data based on the notification from the United Kingdom authorities:

Ten minutes from landing the flight crew became aware of smell/fumes in the cockpit. First officer became unwell and fainted. Both crew went onto oxygen. Mayday declared. Aircraft landed safely and crew sought medical attention.