Was invited to attend an assessment day held by FTE, one of BA's three approved training schools. The assessment day consisted of a competency interview, a group exercise, a mental maths test, computer based aptitude tests and other written tests based on reasoning. Thought the day was very long and tough. Despite me believing I failed, I was invited to attend another assessment at British Airways Waterside. Day 1 consisted of two written tests and another aptitude test, and Day 2 (if successful at Day 1) would have been one final interview. Didn't pass the day 1 assessments unfortunately.