In pictures: Elizabeth II becomes longest-reigning monarch

The Queen has been continuing her official duties in Scotland on the day that she becomes Britain's longest-reigning monarch.

Elizabeth IIAFP

The Queen has reigned for 63 years and seven months - calculated at 23,226 days, 16 hours and approximately 30 minutes from 17:30 BST

This picture of Queen Elizabeth II taken July 2015 has been released on the Buckingham Palace Twitter account, @BritishMonarchy, to mark the moment she becomes the longest reigning British Monarch.PA

Elizabeth II passed the record set by her great-great-grandmother Queen Victoria. This is one of the official pictures released by Buckingham Palace to mark her 63-year reign

Crowds lined the streets as the Queen and the Duke of Edinburgh arrived at Waverley Station in the Scottish capitalGetty Images

Crowds greeted the Queen and the Duke of Edinburgh as they arrived at Waverley Station in the Scottish capital

A piper band performed to crowds at Edinburgh Waverley stationPA

Before their arrival onlookers applauded the performance of the National Youth Pipe Band of Scotland which marched through the station

Queen Elizabeth II arrives with Prince Philip, Duke of Edinburgh at Waverley Station on the day she becomes Britain's longest reigning monarch on September 09, 2015Getty Images

The royal couple then spent a few minutes meeting and chatting with the crowd

Queen boards steam locomotive to formally open the new £294 million Scottish Borders Railway.PA

The Queen boarded a steam-hauled train with Scottish First Minister Nicola Sturgeon on her way to formally open Scotland's new £294m Borders Railway

Elizabeth IIPA

While on board the monarch made an effort to wave to fans as they lined the tracks of her route

The Queen unveiling a plaque at NewtongrangePA

Before arriving at Tweedbank the Queen stopped off at Newtongrange in Midlothian to unveil a plaque to mark the opening of the station

Crowds cheer the Queen's arrival in NewtongrangePA

And once again she was met by cheering fans

Well-wishers also gathered at Tweedbank station to wave flags in anticipation of her arrivalEPA

Well-wishers also gathered at Tweedbank to wave flags in anticipation of her arrival

Elizabeth IIReuters

Her jewellery for the day's events was specially chosen in recognition of her great-great grandmother Queen Victoria, whose reign she has overtaken. Her bow brooch used to belong to Victoria

Visitors look at pictures in The Long to Reign Over Us photographic exhibition at Buckingham Palace in London to celebrate Queen Elizabeth IIPA

In London, people have been heading to Buckingham Palace to look at a photographic exhibition of the Queen, entitled Long to Reign Over Us

BT TowerAFP

As part of the celebrations the BT Tower flashed the message "Long may she reign"

A Royal River Salute sails under Tower Bridge to celebrate Queen Elizabeth II becoming the longest reigning British monarch, in LondonAP

Also in the capital, a flotilla of historic vessels sailed along the Thames to mark the Queen's special day

A flotilla spraying water sails down the River Thames to celebrate Queen Elizabeth becoming the longest-reigning British monarch, in LondonReuters

The procession started from Tower Bridge, and ended at the Houses of Parliament

Onlookers lined Westminster Bridge to see the flotilla pass byPA

Onlookers also lined Westminster Bridge to see the flotilla pass by

A photograph showing memorabilia on sale at Buckingham Palace Shop made especially to mark Queen Elizabeth II becoming the longest serving monarch in British historyEPA

Memorabilia to mark the occasion is also being sold at the Buckingham Palace shop

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