"The Good Friday Agreement is a vital and essential part of the relationship between the U.K. & the Republic of Ireland, and has been central to the two decades of peace it has brought about.
“Labour is completely committed to the agreement and opposed to any return of a hard border between North and South. We are committed to negotiating a new customs union between the UK and Ireland as part of a final Brexit settlement, which would play a key role in ensuring there is no hard border.
“I am deeply sorry that my informal remarks in a meeting last month have led to misunderstanding on that point - in particular, that my use of the word "shibboleth" in its sense of "pass word" or "test of membership" gave the impression that I thought the Good Friday Agreement was in any way outdated or unimportant. I absolutely do not."