I'm guessing this is on a one way road? With traffic driving on the left you'd normally want to look right to check you're not stepping into oncoming traffic (although you should probably check both ways on a normal zebra crossing as you'll be crossing traffic in both directions).

No, the warning can be seen on plenty of two way roads.

Huh, today I learnt.

I was curious so I looked at the identifiable image[1] in the article in google maps[2] and it seems that only some of the crossings have these notes - notably the one way street crossing has look left/right on the respective sides of the road and the crossing with the island has them on both lanes, but the crossing over the two way street has nothing. I can't say I've ever actually noticed these (which may be because they're less common outside London or because I just don't pay close enough attention to the floor at my feet when walking).

[1] https://cdn-images.postach.io/0bd25fcc-8ab1-40fe-8eef-bcafaa... [2] https://goo.gl/maps/LB8rj7FJNLw

Reminds me of two old Viz letters: "When crossing a one-way street, you only have to look in one direction before crossing."

"When crossing a one-way street, always look in both directions in case there is a furniture van backing up."