They are a popular series of chapter books for kids that has been made into a tv show in the UK, but the author is American.

They can be read on all e-readers except Kindle (and on Kindle if you know how to strip the DRM). If you have a Nook you have to download them to Adobe Digital Editions and then sideload to your Nook.

10 of the 11 books are priced at $0.89 but if you use the $1 off code KoboSpring1 they are free.

Horrid Henry books on Kobo