She had not mentioned this condition at her job interview, at which she had not worn a niqab. She took her case to an employment tribunal, which saw, unusually, many British politicians commenting on it before it was heard.
During her job interview, she didn't mention the condition that led to her legal action.  She had not been wearing a niqab at the time of the interview and took her case to an employment tribunal, which attracted unusual attention from British politicians who commented on it before the hearing.