AFAIK, this is a title of the RC Pope. No Anglican has this title. And by definition there can be only one VOC at a time.
From wikipedia:
A “vicar” is, roughly, a representative. In the Catechism of the Catholic Church, in addition to the pope, each bishop is referred to as the “Christ’s Vicar”(§1560) to their diocese, and the conscience is called “the aboriginal Vicar of Christ.”(§1778)
1) The sentence above was specifically intended to swipe at Benedict. Please accept my apology if this was how it was taken.
2) Other protestant denominations do refer to higher ranking clergymen as vicars and sometimes Vicars of Christ.