You’ve quit your job, so on to big, new opportunities then? From envoys to public speaking, one thing’s for certain: they all publish a book.

Margaret Thatcher remained an MP after standing down as PM for an additional two years. But eventually retiring, Mrs. Thatcher remained a key figure in the Conservative party. She has published a series of books and memoirs leading up to her fading from the public eye from 2007.

Tony Blair left office in 2007 and what followed was a journey, firstly working with the UN as an envoy in the Middle East, and then into the private sector as an advisor to JP Morgan. He now offers public speaking, charging up to $250,000. In September, his memoirs will be published.

So what will Gordon Brown do? Well, he has stayed on in parliament as a backbencher, but has suggested that he will avoid the traditional public speaking roles. Instead, his future may lie in global finance. What’s for certain, however, is that it won’t be long before he publishes a book.