Some possible related quiz questions.
If QE2 survives past 18 September 2013, which would seem fairly likely, and Charles succeeds her, he will become the oldest English / British monarch at the start of his reign, surpassing William IV.
And if QE2 survives past 8 August 2015, which would also seem likely, she will become the longest-reigning monarch in English / British history, surpassing Victoria, who reigned for 63 years and 216 days, or 63 years, 7 months and 2 days depending on how you consider it.