I think the puffins (which have the “ok to cross” light on the same side as you) are dangerous. At least twice I have started to cross when I misinterpreted which crossing the light indicated - e.g. where you're on a traffic island with two crossings close to each other at 90 degrees, and one of the poles holding the “green man” sign is near both crossing points.
They have had LED crossings in Spain for several years. The crossings have a presence detector that lights up the crossing and pedestrian making them very visible. When I have used them, both as a driver and pedestrian I have felt quite safe. Spanish motorists tend to be more willing to stop at crossings than UK drivers anyway (and you can usually tell the UK pedestrians - they thank the motorists for stopping)
