I feel that all believers have been indoctrinated to some degree.
Indoctrinating children is unforgivable, but it is done everywhere and always was. The fear of hell fire for ever and ever is particularly disgusting when fed to little children. The whole afterlife thing is a way of ensuring the poor and powerless accept unjust the status quo, in the hope of a reward in heaven.
Once you realise it is all made up, some religions made up by ancient peoples who obviously had no scientific knowledge; other more modern religions like Scientology or Mormonism, by shameless but charismatic men on a sure pathway to power.
I love the freedom and logic of atheism.
To think that London, or anywhere else for that matter, does not belong to any one demographic