When my dad moved to the UK in his early twenties I think he was nominally Christian and he smoke and drunk and went to the Cinema.
The next part of the story is unclear but someone he was working with used to chat with him in the work canteen and convinced he wasn't a proper Christian and need to be "born again".
After this apparently my dad was out in town with the Salvation Army listening to a woman preach and someone from the brethren accosted him and told him that it was wrong for women to preach and managed to convince my dad to join the brethren.
Here women were not usually allowed to pray or preach and in some churches weren't allowed to sing and shouldn't cut their hair or wear make up and jewelry. For example one my sisters got chewing gum stuck in her hair and this annoyed my mum because it meant she had to cut some of my sisters hair off.
This is where he met my mother who grew up in the halls. My fathers mother in Jamaica was a Methodist who I believe sometimes did ministry. But his dad may have been an atheist. He claims Sunday school was a treat for children in Jamaica in those days.