The chief constable of the PSNI was among those who watched The Apprentice Boys of Derry parade pass off peacefully in the Maiden City.
Over 5,000 members of the loyal order took part one of the biggest parades in Northern Ireland on Saturday.
They were joined by 130 bands which took part in the demonstration that marks the anniversary of the ending of the Siege of Derry in 1689.
Marching began in the morning when participants completed a circuit of Londonderry’s historic walls.
Jon Boutcher watched the parade and spoke to officers who were part of a large police presence on the ground.
Apprentice Boys of Derry parade, Saturday August 10.
A thanksgiving service was held at St Columb’s Church of Ireland Cathedral following a wreath laying ceremony at the cenotaph in the Diamond.
Huge crowds watched a pageant re-enacting the historic siege before the main parade got underway at lunchtime.
The governor of the Apprentice Boys, Graeme Stenhouse, had stressed the importance of peaceful and respectful event “celebration”.
“The Apprentice Boys have come on leaps and bounds over the past 25 years and we are going from strength-to-strength and our numbers are continuing to grow,” he said.
“The story of the Siege of Londonderry and the sacrifices continue to be told by the organisation and we hope it can continue for us to go forward in the future.”
Mr Stenhouse also commended the work that goes on behind the scenes to organise two major annual events in August and December.
Apprentice Boys of Derry parade, Saturday August 10.
“We are extremely proud of our culture, our history, our tradition and our identity and it’s important that is recognised by all communities,” he said.
The Relief of Derry parade takes place on the second Saturday in August each year.
It commemorates the ending of the 105-day siege of the city in August 1689 which took place against the background the deposed Catholic King James II’s attempt to regain his crown from his Protestant son-in-law, King William III.
Better known as William of Orange, or King Billy, the new monarch had the support of Protestants in Derry who closed the city gates hold back the advancing Jacobite army.