Two other OEs, Sir George Young and Oliver Letwin, attend Cabinet but are not members of it.

The Attorney-General attends Cabinet, but the post is not the same as the Minister of Justice.

He soon after (in October 1915) succeeded his friend Sir Edward Carson as Attorney General, with the right to attend Cabinet.

He may attend Cabinet, not as a full member but because of his strategic portfolio.

Sir Norman Fowler: Chairman of the Conservative Party (Attending Cabinet)

Minister of State for Universities and Science (attending Cabinet)

He still attends Cabinet in this capacity.

Gavin Strang - Minister for Transport Also attending Cabinet:

His successor, Jim Murphy, was not given a provision to attend Cabinet as he was.

The office can be seen as a sinecure, allowing the Chief Whip to draw a government salary, attend Cabinet, and use a Downing Street residence.