This is a work in progress please check back later or on

http://www.charityfonts.org

NOTE: This font bears no resemblance to the font used on the official Royal Wedding Invitations this can be found here it's debatable if this is either Monotype Perpetua Italic OR the Hermann Zapf's Renaissance Antiqua No.2
you decide.

http://www.ascendercorp.com/font/perpetua/

http://new.myfonts.com/fonts/efscangraphic/zapf-renaissance-antiqua-no-2-sb/