I will be visiting London soon and when I look up the details for travelling on public transport there I would like some advice about those 'discount' available.
To travel within London, it appear to me that using the Oyster card is the best solution. But I am not a student in UK, so I think it will be impossible for me to get the student Oyster card. I notice that I can purchase a 16-25 railcard that could give me discount and could be useful if I want to go further around England, but it is rather expensive (£30).
I think I will go to London/UK a few more times this year, is it worth to get railcard for the trip? Does the discount alone in the metropolitan area worth the expensive railcard?
Also, are the blue Oyster card and Visitor Oyster card just the same except the appearance?