The jokes are all over the internet. A dog is shown surrounded by a shredded cushion. Another one is eating stew from a pot on the kitchen stove. Whatever the situation, the punchline is the same quote: "I cannot comment until Sue Gray has completed her investigations."

Until a couple of weeks ago Sue Gray was known as "the most powerful person you've never heard of". Then she was put in charge of investigating parties at 10 Downing Street during lockdown - and became a household name.

Her report is expected this week. If it finds that Johnson knew about the illegal gatherings, he could be forced to resign.

Gray has always kept a low profile. Even those who worked with her for years do not know where she grew up. Some people even think she might have been a spy in Northern Ireland during the Troubles. 

Her official title is Second Permanent Secretary to the Cabinet Office. But she used to be in charge of deciding whether ministers had broken rules - so she is the ideal person to look into Partygate.

Her job was to know everything about senior figures that might embarrass the government. As one person said: "She knows where the bodies are buried."

There is a softer side to her: she loves cats, and is brilliant at karaoke. But no one doubts that her report will be ruthlessly professional. 

Gray did not go to university: instead, she joined the civil service straight from school.

Many others have gone far without a university education. Alan Sugar and Richard Branson both left school at 16 to start their own businesses.    

Bill Gates, Mark Zuckerburg and Steve Jobs all dropped out of college.

Yes: For most people, education is the key to success. University does not just increase your knowledge, it provides a chance to expand your mind by mixing with clever people from many different backgrounds.

No: To be a success, you should start work and learn the ropes of the real world as soon as possible. Going to university will saddle you with an enormous student loan which will take years to pay off. 

Or... You will get more out of university if you go later in life rather than straight after school. You will have a better idea of what really interests you, and focus on your studies instead of partying.