Yup, he was performing magic on the streets of London... one of the tricks involved the 7 of Spades, which I now own I wasn't there but friend who was got me the card.
how do you know that?
I have a friend in London who told me Blaine was on the streets doing tricks in the week before he was put in the box. He said that in one of the tricks Blaine dropped the 7 of Spades so my friend picked it up and sent it to me as a memento. I have no way of knowing that it is definitely one of Blaine's cards, so I'll just have to wait and see the TV special (or the DVD if that has the footage). I have no reason to not believe my friend, especially as he's not a magician and he sent me a blue-backed Bicycle 7 of Spades (where would a non magician in the UK get one?)
We'll have to wait and see