Queen Elizabeth II enters the record books today, becoming Britain's longest reigning monarch.

Fox News Radio's Simon Owen reports from London:

The Queen has been on the throne for 63 years and seven months. In that time there have been twelve U.S. Presidents. Today she's set to overtake Queen Victoria -- her great-great-grandmother.

(Coronation)

This was Elizabeth's coronation. She became Queen in 1952 -- aged 25. She's now 89.

But her former Communications Secretary Simon Lewis believes she won't be stepping down any time soon.

(Lewis) "I think the queen made a commitment, a very public commitment to the country about serving the country, so I don't see any prospect of that."

There are no major celebrations planned to mark the record. Buckingham Palace insisting it's business as usual.

In London, Simon Owen, Fox News Radio.