I am a little confused about the travel in London. You need a passport sized photo for a travel card?
Is it worth it to pay for a 6-day london pass and oyster card for 141 GBP ( $222 USD) if I am in London for 6 days? Should I just get the paper travel pass ? I have read an article on 2-4-1 offers also and it seems to get these I need a paper travel pass.