WorldBuilding:FAF/England

Creatures
English folklore is mainly populated by three groups of folkloric beings - fairies, witches, and ghosts. English folklore is distinct from either the Celtic or Germanic mythology practiced in the UK as its stories are generally somewhat tied into Christian belief - especially mythological aspects, especially as time progresses and in the case of witch folklore.

Fairies
Fairies are incredibly interesting, having evolved massively over time to a creature so good that an unrealistically optimistic belief is a 'fairy story' from creatures that would kidnap new born children. Fairies can probably be grouped into three phases: early or medieval fairies which are largely evil and are largely found in various local folktales; middle or renaissance fairies that are a mixture notably found in A Midsummer's Night Dream, Peter Pan, and Lud In The Mist; and late or modern fairies that are found in today's children's entertainment.

Fairies are most likely an evolution of Celtic beliefs, possibly with merging with Germanic Heathen beliefs, and are comparable internationally with Irish Daoine Sidhe and Icelandic Huldufólk but is not nearly as prevalent in the modern day.

Interestingly, many saying associated with early fairies remain in use today - fairy knots, away with the fairies, and fairy circles.

YouTube Videos

 * English Heritage's Tales From English Folklore - a series of poems about various English folktales, apparently mainly associated with sites run by English Heritage with videos of actors in period costumes. They are very different to most YouTube content, but viewers who can look past that will probably find them well produced and quite enjoyable. These are followed by a speech about the contextual folklore and when and where the folktale was first recorded.
 * Legendary Creatures of Britain by Fire of Learning - one of Fire of Learning's videos in there series on cryptids and folklore creatures.