Steve Burton, Director of Community Safety, Enforcement and Policing at TfL, said: 'While the level of fare evasion on the network is low, it continues to cost Londoners millions of pounds every year.
'We therefore need to make the penalty charge more effective and the early payment reduction will encourage prompt payment.
'We know that our honest, fare paying passengers feel angry when they see others not paying for their journey and this should reassure them that we are tackling this issue head on.
'However, the simple way to avoid this penalty is to ensure you pay the correct fare for your journey in the first place.'
So from Sunday you'll see new Penalty Fare signage on both gatelines and trains across the Tube's network replaced with new signs. Perhaps there should be a few other new Penalty Fare signs put up while they are at this.