A formal act of defection from the Catholic Church:

ACTUS FORMALIS DEFECTIONIS AB ECCLESIA CATHOLICA

English translation of official Vatican document of defection.
 

Declaration of De-Baptism & Renunciation of Religion

After due deliberation, I, ......................., having been subjected to the Rite of Christian Baptism  in infancy (before reaching an age of consent), hereby publicly revoke any implications of that Rite and renounce the Church that carried it out. In the name of human reason, I reject all its Creeds and all other such superstition - in particular, the perfidious belief that any baby needs to be cleansed by Baptism of alleged "original sin", and the evil power of supposed demons. I wish to be excluded henceforth from enhanced claims of church membership numbers based on past baptismal statistics used, for example, for the purpose of securing legislative privilege.
Signed ...............
Witnessed by ............
This .... day of ......... 20.
Provided by the National Secular Society, 25 Red Lion Square, London WC1R 4RL,        www.secularism.org.uk

Original Secular Society pdf .                             Editable doc
 
 

Renouncing Islam
Ex-Muslims of Britain