Campaigners bound in chains have set off on a 250-mile march to commemorate the abolition of the slave trade.
The month-long Lifeline Expedition from Hull to London has been organised to apologise for the slavery.
The event is one of the first to mark the 200th anniversary of the abolition of the slave trade.
The 30-strong group will be joined for the first two days by Lady Kate Davson, a descendant of anti-slavery campaigner William Wilberforce.
Deputy Prime Minister John Prescott is also expected to join the march before it reaches Westminster on 25 March.
'Risky ventures'
The expedition started on Thursday morning after the Bishop of Hull anointed the marchers with water from the font where William Wilberforce, who was elected as MP for the city in 1780, was baptised.
Those joining the walk include people whose ancestors were slaves or employed slaves.
Organiser David Pott said they hoped the walk would also draw attention to the estimated 12 million people the International Labour Organisation reports are working in modern slavery.
He said: "I have been reminded that it is normal that expeditions involve risks - slave trading expeditions were risky ventures.
"So as we seek to undo the damage initiated by the slave trade it should be no surprise that we face challenges. However, on our journey we will not suffer a fraction of what slaves went through."
He added that other people were welcome to join the march at any point during the event.
Are you taking part in the expedition? Have you seen the march pass by? You can email your pictures and moving footage to yourpics@bbc.co.uk or text them to 61124.
When taking photos or filming please do not endanger yourself or others, take unnecessary risks or infringe any laws.
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