#type green

May I present the evidence, first from Matilda:

Matilda Wormwood is telekinetic due to all of her pent-up mental energy.

According to Study.com, Matilda is set in an English village

Since the book was published in 1988 and it mentions a small TV and TV dinners, it's probably also set in the '70s-'80s.

This screenshot from Wikipedia:

Now, the second part of my theory. These facts have been taken off the SCP Wiki, specifically from the article SCP-4231. (TW: SA, read at your own risk)

The GOC once launched a project named after a biblical character who is mentioned only twice. The project's aim was to liquidate every Type Green (reality bender) they found.

In the peak of this project (the 1980s), the GOC killed off ~75% of all Type Greens.

Usually, the average lifespan of a Type Green is 19 years old, because they usually just /gamemode creative at that age. During the project, however, the average age of a Type Green was 8, because that's when the GOC found them.

Also, this screenshot showing the distance from Cornwall to Buckinghamshire (it's about 4 hrs by car in the 2020's):

THEREFORE