Thames

A Queen's Swan Upper holds a swan during the annual count of the Queen's swans on the river Thames in Middlesex in Staines on Thames, England, Monday

Frank Augstein)/AP

A Queen’s Swan Upper holds a swan during the annual count of the Queen’s swans on the river Thames in Middlesex in Staines on Thames, England, Monday

The Viking Star going through the Thames Barrier in London as part of its maiden voyage. PRESS ASSOCIATION Photo. Picture date: Tuesday May 12, 2015. The delivery ceremony took place on March 28th when the ship was presented at Fincantieri s Marghera shipyard outside of Venice, Italy. On April 11th, Viking Star set sail from Istanbul making her way through the Mediterranean into the Atlantic on her way to be officially christened in Bergen, Norway on May 17th. Classified by Cruise Critic as a  small ship,  the all-veranda Viking Star has a gross tonnage of 47,800 tons, 465 cabins and will accommodate 930 passengers. It is engineered to allow direct access into most ports, so guests have an easy and efficient embark and debark. The Viking Star is one of three ocean cruise ships on order; the remaining two ships, Viking Sea and Viking Sky, are currently under construction

Viking Ocean Cruises/Jeff Moore/PA

The Viking Star going through the Thames Barrier in London as part of its maiden voyage on Tuesday

The Queen's Swan Marker David Barber and other swan uppers inspect a swan during the annual Swan Upping ceremony on the River Thames between Shepperton and Windsor in southern England...The Queen's Swan Marker David Barber (R) and other swan uppers inspect a swan during the annual Swan Upping ceremony on the River Thames between Shepperton and Windsor in southern England July 14, 2014. Young cygnets are counted and swans and cygnets are assessed for signs of injury or disease during the ceremony. The five-day census of the swan population dates back to the twelfth century when the Crown claimed ownership of all mute swans. Today, the Crown retains the right to ownership of all unmarked mute swans in open water, but The Queen only exercises her ownership on certain stretches of the River Thames and its surrounding tributaries.

Luke MacGregor/Reuters

The Queen’s Swan Marker David Barber (R) and other swan uppers inspect a swan during the annual Swan Upping ceremony on the River Thames between Shepperton and Windsor in southern England on Monday. Young cygnets are counted and swans and cygnets are assessed for signs of injury or disease during the ceremony

 A boat crew carries their boat down to river from the boat tent at the Henley Royal Regatta on July 2, 2014 in Henley-on-Thames, England. Opening today and celebrating its 175th year, the Henley Royal Regatta is regarded as part of the English social season and is held annually over five days on the River Thames. Thousands of rowing fans are expected to come to watch races which are head-to-head knock out competitions, raced over a course of 1 mile, 550 yards (2,112 m) which regularly attracts international crews to race.

Matt Cardy/Getty Images

A boat crew carries their boat down to the river for the 175th anniversary of the Henley Royal Regatta in Henley-on-Thames, England. The event opened on Wednesday and will be held over five days on the River Thames

British army soldiers place sandbags at the entrance to a flooded house at Chertsey, England, Wednesday, Feb. 12, 2014.  The River Thames has burst its banks after reaching its highest level for many years, flooding riverside towns upstream of London, including Chertsey which is about 30 miles west of central London. Some hundreds of troops have been deployed to assist with flood protection and to get medical assistance to the sick and vulnerable.

/Sang Tan/AP

British army soldiers place sandbags at the entrance to a flooded house at Chertsey, England. The River Thames has burst its banks after reaching its highest level for many years, flooding riverside towns upstream of London, including Chertsey which is about 30 miles west of central London.

Winter weather Feb 4th...People walk along the Southbank as a rainbow appears over the city of London. PRESS ASSOCIATION Photo. Picture date: Tuesday February 4, 2014.

Nick Ansell/PA

People walk along the Southbank as a rainbow appears over the City of London