The British Alphabet, Ancient, is composed of two distinct alphabets: Ogham and Ogam. Ogham is an alphabet consisting of five letters, while Ogam is an alphabet consisting of four letters. Both alphabets were used in ancient Britain, with Ogham being the older of the two. Ogham was used primarily for inscriptions on stone monuments, while Ogam was used for writing manuscripts. Both alphabets are still used today in some parts of the British Isles.