Hope you get to read this as I've only just found this site and your message was posted a few years ago.
My grandmother's name was Vera M Porritt,I think she was born about 1898. She lived in Crayford for a while in the1920s as a Housekeeper. I have been led to believe that she was related to the Porritt's of South London.
Hope you can help with any information that would help me to verify this and if it turn's out that we are related in some way that you could give me some information on her parent's, and any other relative's.