A look at the structure of Westminster after it was rebuilt in the 19th century following a fire. This edition contains unprecedented access to the building, including Margaret Thatcher giving a tour of the Prime Minister's meeting room.
A look at the Speaker of the Parliament, a role which is only below the Prime Minister and Lord President of the Council in precedence of all the Commoners in the Kingdom.
The final episode in the series looks at the 2000 people who ensure the day-to-day running of Parliament, including lawyers, cooks, cleaners and those who maintain the rarely-seen cellars.