This is an annual day which is being celebrated on July 29th. Here's some copy-and-paste blurb from the official website (which has info and resources):

Day for Life is the day in the Church’s year dedicated to celebrating and upholding the dignity of human life. The Church teaches that life should be protected and nurtured from conception to natural death. This year's Day for Life falls on 29 July 2012. Cardinal Cormac Murphy-O'Connor once wrote that we need to build "an ethos of life that protects persons from womb to tomb - especially the most vulnerable". Consequently, the Catholic community in England and Wales gathers on the last Sunday in July every year to pray for all who care for and nurture life from its very beginnings and growth to its final years. We also pray for legislators and those in authority that they respect and protect human life in all its stages.