While sport is endlessly talked of as a force for unity, in today's edition of Sport and the British, Clare Balding's in Belfast on the Falls Road, where it's clear that here sport was just another arena to reinforce divisions that rent the community in two.

Clare Balding visits Croke Park in Dublin, to discover the story behind the formation of the Gaelic Athletic Association and it's founder Michael Cusack. All this week in Sport and the British Clare has been exploring how sport defined and gave an independence to the nations of the British Isles, nowhere is this more evident and vocal than in Ireland. The GAA defined what it was to be Irish - meaning how far removed that is from being English and hurling and Irish football were a way of exemplifying that. Clare talks to Dr Paul Rouse of University College Dublin and Professor Michael Cronin of Boston College Ireland about the history and future of the GAA.

Clare Balding's at Cardiff Arms Park for this edition of the series that explores how sport made Britain and Britain made sport. Here she looks at the vital role rugby has played in shaping Welsh identity; the stadium was built to be an emblem of national pride, a fortress for Welsh sport in its capital city.

She talks to the legendary Welsh captain and scrum half, Gareth Edwards about Wales' glory days of the sixties and seventies and the impact the introduction of professionalism had on the national side. She also talks to Professor Tony Collins from The International Centre for Sports History and Culture, De Montfort University

The reader is Alun Raglan.

Clare Balding continues her investigation into how sport shaped Britain and Britain shaped sport. Today we join her at Hampden Park in Glasgow as she explores the part football has played in shaping Scotland's national identity and its changing relationship with England. Clare talks to Hugh McIlvaney about why supporting, 'anyone but England' is still part of the Scottish mindset.

Clare Balding continues her investigation into how sport shaped Britain and Britain shaped sport.

Clare Balding looks at the role gambling has played in our relationship with sport as she continues her exploration into how Britain made sport and sport made Britain.

Clare Balding discovers how working women finally got their sporting chance, through the leisure activities offered by many major employers, at the turn of the twentieth century.The number of female workers in factories, large retailers and service industries was growing hugely and the employers decided to provide them with sports facilities and equipment. Clare visits Bournville, home of Cadbury's, who, like the Lyons company, famous for their tea shops, or Boots in Nottingham, gave access to all their employees to tennis courts, hockey fields, football pitches, lacrosse fields and athletics equipment. She talks to Fiona Skillen from the University of Central Lancashire about the women's football teams of that period, like the Dick Kerr Ladies, that had the power to attract crowds of over twenty thousand spectators but were later banned by the Football Association.

Clare Balding looks at the relationship between boxing and Britain's ethnic minorities.Through the centuries, immigrants have had to literally fight for recognition in Britain and that means with their fists.

Clare Balding continues to explore the history of sport in Britain and in today's programme visits one of the oldest tennis clubs in the country in Leamington Spa. In Victorian Britain, lawn tennis took off thanks to the growing numbers of a whole new strata of society - the middle class. Living in suburbia with clean air, space and leisure time, tennis and golf became increasingly popular pastimes. There were 250 clubs in the Lawn Tennis Association by 1900 rising to 3000 by the 1930's and 5000 by the 50's. The middle class had grasped hold of a sport that seemed perfectly designed for polite society. It didn't involve getting dirty or even particularly sweaty and the same could be said for golf. Clare also visits Kenilworth Golf Club where Professor Richard Holt of the International Centre for Sports History and Culture at De Montfort University explains that these clubs were as much about social division as they were about inclusion.

As Clare Balding continues to explore the unique relationship Britain has had with sport, in today's programme she tells a tale of lies, witch hunts, bigotry and the north/south divide.This isn't the story of a battle-torn country, but of a civil-war within a sport with rugby becoming a symbol of class division and splitting in two.