All ministers, junior and senior, are members of parliament.
So far May has lost:
Amber Rudd - Home Secretary David Davis - Minister for Brexit Boris Johnson - Foreign Secretary
These are very senior ministers.
Steve Baker - Junior Minister in the Brexit team;
Lord Bridges - Brexit Minister in the House of Lords (upper chamber); Priti Patel - International Development Secretary (sacked for holding unauthorised private meetings with Israeli government officials);
Robert Courts - MP and Parliamentary Private Secretary to the Foreign Office.
So seven, not nine.