I took my son and a friend to Twickenham last weekend. They wanted to stop off in London on the way and make a longer day of it so I needed to buy travel cards. £2 for each of them. £2!!!!!!!!!! I was very surprised. They had to travel with an adult but I was going anyway and for two 14 year old lads to travel from Hertford, have the freedom of transport around London, over to Twickenham and back home I have to say £2 is great value.