The last surviving person to be captured in Africa in the 19th century and brought to United States on a slave ship, has been identified as a woman called Matilda McCrear, who died in Alabama in 1940. Sean Coughlan has spoken to the historian Hannah Durkin who uncovered Matilda's extraordinary life story and to Matilda's grandson, Johnny Crear.

Photo: Matilda McCrear in later years. Copyright: Johnny Crear.

Norwell Roberts joined the Metropolitan police in 1967. He was put forward as a symbol of progressive policing amid ongoing tensions between the police and ethnic minorities in the capital. But behind the scenes, he endured years of racist abuse from colleagues within the force. Norwell Roberts QPM spoke to Alex Last about growing up in Britain and his determination to be a pioneer in the police force.

Photo: London's first black policeman PC Norwell Roberts beginning his training with colleagues at Hendon Police College, London, 5th April 1967. (Hulton Archive/Getty Images)

Madam C. J. Walker was the first ever self-made female millionaire. She was born to former slaves in the USA and was orphaned at seven but against all the odds she went on to create her own business selling black hair-care products. By the time of her death in 1919 she'd become a famous philanthropist and civil rights campaigner. Claire Bowes has been speaking to her great great granddaughter A'Lelia Bundles.

Photo: Madam Walker Family Archives/A'Lelia Bundles

How a 14-year-old boy became the youngest person to be executed in the USA during the 20th century. George Stinney Jr was sent to the electric chair in 1944. He had been tried for the murder of two young girls, but when the case was reviewed by a court in South Carolina in 2014 his conviction was annulled. Ashley Byrne has been speaking to George Stinney Jr's sister Katherine Robinson, and to Matt Burgess who was one of the team of lawyers who fought to clear his name.

Photo: George Stinney Jr in 1944. Credit Alamy.

Desmond's was the most successful black sitcom in British TV history. It ran on Channel 4 for over five years, attracting millions of viewers. Trix Worrell, the man who wrote it, believes that Desmond's changed attitudes to race in the UK. Trix has been speaking to Sharon Hemans about the show, and the people who inspired it.

Image: Ram John Holder, Norman Beaton and Gyearbuor Asante (Credit: Courtesy of Channel 4)

For much of World War Two African-American soldiers were relegated to support roles and kept away from the fighting. But after the Allies suffered huge losses during the Battle of the Bulge, they were called on to volunteer for combat. Janet Ball has been speaking Reverend Matthew Southall Brown who saw action in Europe towards the end of the war. He fought in the US Army's 9th Division, 60th Regiment, Company E.

Photograph:Volunteer combat soldiers from the 9th Division prepare for shipment to front lines in Germany. Credit: US Government Archives.

When police in New York shot a young immigrant 41 times in 1999, thousands of people took to the streets to protest. But Amadou Diallo's mother Kadiatou wanted her son to be remembered for the way he lived, not the way he died. So she flew to the US to speak on his behalf. She has been telling Sharon Hemans her story.

The US first began sending troops to the UK in 1942 to help in the war effort. It is estimated that at least two million American servicemen passed through the UK during World War Two and tens of thousands of them were black. The African-American GIs stationed in Britain were forced by the American military to abide by the racial segregation laws that applied in the deep south of the US. But that didn't stop relationships developing between British women and the black soldiers, some of whom went on to have children. Babs Gibson-Ward was one those children. She has been speaking to Farhana Haider about the stigma of growing up as mixed raced child in post-war Britain.

(Photo: Hoinicote House children, c.1948. Boys and girls whose parents of mixed ancestry met during WWII. Credit: Lesley York)

In 1963 a small group of British black activists started a pioneering protest against racism within the local bus company in Bristol. It had specified that it did not want to employ black bus drivers. Inspired by the example of the US Civil Rights Movement the boycott ended in victory and led to the passage of Britain's first anti-discrimination laws.

Paul Stephenson and Roy Hackett spoke to Louise Hidalgo in 2013 about their part in the protest.

Photo: Park Street in Bristol in the early 1960s. (Credit: Fox Photos/Getty Images)

In August 1958 Britain was shocked by nearly a week of race riots in the west London district of Notting Hill. The clashes between West Indian immigrants and aggressive white youths known as Teddy Boys led to the first race relations campaigns and the creation of the famous Notting Hill Carnival. Using voices from the BBC archives Simon Watts tells the story.

Photo: Street scene in Notting Hill at the time the race riots broke out in 1958. Credit: Getty Images.