It is a large project that will literally grow in western England, in what is today mostly an agricultural landscape in primarily Wiltshire, Gloucestershire, and Somerset.
The national forest is called Western Forest and the area also includes the cities of Bristol, Swindon, Salisbury, and Gloucester.
In some parts of the area, only seven percent is covered by trees. So by 2050, 20 million will be planted on a 2,500-hectare area.
The government will invest 7.5 million pounds (nearly 100 million kronor) in the project, with the hope of increasing access to nature for people, preventing floods, and strengthening animal and plant life.
"The government was elected with a mandate to plant three new national forests during this term, as part of our commitment to achieving net-zero emissions and driving sustainable growth," says Environment Minister Mary Creagh in a press release.
The investment is also part of the government's goal that 16.5 percent of England will be forest land by 2050, and a total of three new national forests will grow. But so far, only ten percent of the country is covered, and environmental groups have said that the pace needs to be increased, according to BBC.