The ultra-low emission zone expansion (ULEZ) is set to generate £300 million within its first year, but by 2027 the scheme will fall to zero profits. 

It comes as the London Evening Standard revealed that Transport for London's (TfL) 'central estimate' for the new scheme will create an extra £200m within its first 12 months after the expansion to all of Greater London from August. 

The £200m estimated will include a '50 per cent plus or minus' range, seeing the income range between £100m and £300m, according to TfL finance chief Patrick Doig. 

But TfL also said it expects the zone's income to drop by 2027 as more drivers switch to greener vehicles in a bid to avoid paying the £12.50 daily charge. 

Complying vehicles will mean that more drivers will not need to pay the charge and will also see compliance rates increase each year from the launch. 

Although the ULEZ expansion will see an increase in greener vehicles over years, the zone is set to remain in place to discourage the use of polluting vehicles in the region. 

ULEZ Expansion to cost £160 million

TfL has also shared that it expects it to cost £160m to expand the zone outside of its current North and South Circular roads. 

There will be 2,700 more cameras in the suburbs that can read number plates and check vehicle compliance, to ensure those that do not meet regulations have to pay the charge. 

The ULEZ expansion was confirmed in November last year and sparked a backlash from many residents and politicians in Hertfordshire.

As some described the plan as a "bloody joke" and asked, "why should we pay?"

One said: "So I'm now without a car then. Cannot afford a new one and cannot afford the charge. Can't take public transport as I have too many things to carry."

Whilst others agreed with the scheme as one person wrote: "Great idea, cleaner air for the children."