At the 1980 National Pastoral Congress in Liverpool, Sector B, Topic 3, under the chairmanship of Mr David Hobman proposed:
"...adaptations must be made in anticipation of the growing shortage of priests. Domestic litugies must be encouraged and lay people must be trained to offer leadership in those liturgies where the priest's presence is not essential and which do not involve the celebration of the Mass. These celebrations have the advantage of encouraging joint Christian worshop and what we can do together should be done on an ecumenical basis."
It's all there. They've wanted to do this for ages.