Uber will raise £200 million ($260 million) to help all of its drivers in London transition to electric vehicles (EVs) by 2025.

The company unveiled plans Tuesday to tackle air pollution in Britain's capital, including a 15 pence per mile charge on each trip booked in London and incentive payments to its drivers.

The 15 pence "clean air fee" will help fund its initiative to swap over to electric cars, Uber said, with one penny of every levy charged going toward incentives for drivers, in addition to other clean-air schemes.

Uber will pay its drivers a certain amount to help them pay for electric vehicles, dependent on the number of miles they have driven using the company's app. "For example, a driver using the app for an average of 40 hours per week could expect around £3,000 of support towards an EV in two years' time and £4,500 in three years," the firm said in a statement.

It expects 20,000 drivers to upgrade to electric vehicles by the end of 2021. The firm currently has 45,000 licensed drivers operating in the city and more than 3.5 million riders using the platform.

The firm said it is working with a number of electric vehicle charging suppliers, including BP's ChargeMaster, EO Charging, EVBox and Franklin Energy, to help drivers find a charging point. It says it has already teamed up with U.S. EV charging firm ChargePoint to give its drivers access to charging stations in central London.