Hi I need some advice. I have got stopped on 9/03/20 after touch out my oyster in London Underground. It was my brothers Oyster card. I admitted that I used it by mistake and when I received a letter from tfl whether to plea guilty or not guilty. I plead guilty and explained the situation too. They sent an email asking for my Oyster card. Since I am using the pay as u go Oyster card. I sent them the serial number