Hybrid vehicles would also be covered by the ban.
Spokeswoman Areeba Hamid said: "While this plan makes the right headline-grabbing noises, in reality it means that children across the United Kingdom will continue to be exposed to harmful air pollution for years to come".
The government said the initiative is part of plans to eradicate air pollution in the country. In November of 2016, the government was again ordered, this time by the High Court, to revise its plans.
The government was ordered to publish its plans after it lost a high court battle a year ago.
However, there are concerns that the plans will place "unprecedented strain on the National Grid".
They favour local measures such as retrofitting buses and other transport to make them cleaner, changing road layouts and even altering features such as speed humps and re-programming traffic lights to make traffic flow more smoothly to reduce pollution.
Instead the government handed responsibility for the problem to local authorities, critics complained saying councils should only introduce fee-charging clean air zones as a last resort. "The average fuel consumption for new cars is 52.1mpg for petrol, 61.7mpg for diesel - go figure".
The Society of Motor Manufacturers and Traders Chief Executive, Mike Hawes said: "The anti-diesel sentiment has caused consumers to pause before buying a new vehicle".
The blueprint highlighted roughly £1.4 billion ($1.8 billion) in government investment created to help ensure that every vehicle on the road in Britain produces zero emissions by 2050.
SMMT chief executive Mike Hawes said demand for alternatively fuelled vehicles was growing but still at a very low level.
It's not yet known how much the taxes would amount to for each diesel driver, but they would be in addition to the £10 T-Charge, which was announced earlier this year to discourage diesel drivers from already polluted city centres, as well as other levies to discourage drivers out of diesels.
However, it says previous schemes have been "open to a degree of fraud" and the government will have a consultation process to identify and solve those issues before launching the scheme.
He believes Cayman is leading the way in the region when it comes to reducing polluting emissions.
As shown in our poll (above), it's the high cost of buying an electric auto that is still putting people off, as opposed to the range, charging points or charging times.
"The government is right to set a date to stop the sale of gasoline and diesel engines but 2040 is too late", said Areeba Hamid, a spokeswoman, in a statement.
No - at least not on the evidence seen in these plans.
There are now over four-thousand electric vehicles on New Zealand roads, with those numbers set to increase in the coming years. An incentive-based diesel scrappage scheme has not been included among the proposals, something many environmental groups had wanted, but Gove said it was not off the table.