The “promise” to cut TFL fares by 7% is a key plank of Livingstone’s election bid. I have never believed that he would deliver on this because he has a track record of saying one thing before an election, then doing something completely different afterwards. But I’m a Conservative and you’d expect me to say that.
But Channel 4 News has a well respected and independent FactCheck site which has looked at Livingstone’s claims that he could cut fares but not services and determined that they are “fiction”. If this was a peripheral issue it would be damaging enough but his well publicised fares announcement is the core element of his pitch and the number have been proven not to stack up.