Introduced as recently as 1995, the British Mid-Amateur Championship does, in fact, have a longer history. In 1954, Sam Bunton founded the British Youths Open Championship for amateurs and professionals under the age of 22. The aim was to provide a category for those players who were too old to compete in the Boys Amateur Championship, which was aimed at players under the age of 18, and who were too young to compete in major tournaments.
By the end of the 1950s, the British Youths Open Championship had become a well-established, popular event, with entries exceeding 200. Its future, however, came under discussion in 1962, when a letter was read to the Championship Committee on July 8, stating that the sponsor was anxious to hand over the event to another authority.
Following a period of negotiations, the General Committee gave its approval. The R&A began its administration of the event in 1963. While it continued as an event for youths aged between 18 and 22, it was decided that professional entries should be excluded. The R&A also changed the title, renaming it the British Youths Open Amateur Championship.
The handicap limit, which was originally not more than six, was lowered in 1968 to four. At the same time, the minimum age requirement was abolished.
It was played as such until 1994, when the Championship Committee decided to replace it with a new fixture. This, the British Mid-Amateur Championship, made its debut at Sunningdale in 1995. Entries are accepted from competitors who have reached the age of 25 prior to the first day of the championship.