Ha ha! Good to know London is so well known around the world!!
Graffiti is pretty acceptable in UK and they always seem go hand in hand with the railway network, we always see lots of them near the stations and depots. But it's the first time I've seen them on trains in service.
Glad you enjoyed this piece.
Haha. Indeed it is.
Thats pretty much interesting. Here, any graffiti in public(gov) location are immediately thrown away.
Felt great to go through blog. My pleasure.