See the moving photographs of the commemorations taking place for the Battle of the Somme centenary

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The UK has been paying its respects to the thousands of soldiers killed in the Battle of the Somme 100 years ago.

A night-long vigil was held across Britain and at the Thiepval Memorial to the Missing of the Somme, which towers over the rolling Picardy fields where so many fell.

military-led vigil (Chris Radburn/PA)
(Chris Radburn/PA)

Soldiers stand at the four corners of the Stone of Remembrance (Gareth Fuller/PA)
(Gareth Fuller/PA)

Soldiers stand amongst lit war graves (Gareth Fuller/PA)
(Gareth Fuller/PA)

The Queen launched the vigils on Thursday at a Westminster Abbey ceremony, which closed with a piper performing next to the Grave of the Unknown Solider.

the vigil at the Grave of the Unknown Solider in Westminster Abbey (Dominic Lipinski/PA)
(Dominic Lipinski/PA)

A piper plays at the close of the vigil (Dominic Lipinski/PA)
(Dominic Lipinski/PA)

In London, people lined Parliament Square where the roar of guns was followed by the two-minute reflection.

The King's Troop Royal Horse Artillery were present, having been at Thiepval on Thursday night.

The King's Troop Royal Horse Artillery arrive (Daniel Leal-Olivas/PA)
(Daniel Leal-Olivas/PA)

The King's Troop Royal Horse Artillery march (Daniel Leal-Olivas/PA)
(Daniel Leal-Olivas/PA)

The King's Troop Royal Horse Artillery fire First World War guns in Parliament Square (Daniel Leal-Olivas/PA)
(Daniel Leal-Olivas/PA)

In Edinburgh, a two-minute silence was held at Scotland's National War Memorial, with descendants of some of those who died at the Somme in attendance.

A two minute silence is observed in Crown Square, Edinburgh (Lesley Martin/PA)
(Lesley Martin/PA)

A special service which followed an overnight vigil at edinburgh castle (Leslie Martin/PA)
(Leslie Martin/PA)

People huddled under trees and umbrellas paused from their journeys or duties to stand quietly.

Members of the London Fire Brigade pay their respects (Daniel Leal-Olivas/PA)
(Daniel Leal-Olivas/PA)

Wimbledon ground staff stand for a two-minute silence (Philip Toscano/PA)
(Philip Toscano/PA)

The British Army suffered almost 60,000 casualties on the first day alone and more than a million men would be killed or wounded on both sides over the course of the 141-day offensive.

People view memorial poppies in the ground (Steve Parsons/PA)
(Steve Parsons/PA)

A message on a memorial poppy placed in the ground (Yui Mok/PA)
(Yui Mok/PA)