The Inns of Court in London are the professional associations for barristers in England and Wales. All barristers must belong to one such association. They have supervisory and disciplinary functions over their members. The Inns also provide libraries, dining facilities and professional accommodation. Each also has a church or chapel attached to it and is a self-contained precinct where barristers traditionally train and practise, although growth in the legal profession, together with a desire to practise from more modern accommodations, caused many barristers' chambers to move outside the precincts of the Inns of Court in the late 20th century.
Several centuries ago the Inns of Court were any of a sizable number of buildings or precincts where barristers traditionally lodged, trained and carried on their profession.
Over the centuries the number of active Inns of Court was reduced to the present four:
Lincoln's Inn, the largest, is able to trace its official records to 1422, whilst the Inner and Middle Temples are recorded as separate societies in a manuscript yearbook of 1388. The records of Gray's Inn begin in 1569, but teaching is thought to have begun there in the late fourteenth century.
The Inns are near the western boundary of the City of London; nearby are the Royal Courts of Justice (opened in 1882; previously sat in Westminster Hall), which were placed in the legal quarter of London for convenience. Each Inn is a substantial complex with a great hall, chapel, libraries, sets of chambers for many hundreds of barristers, and gardens, and covers several acres. The layout is similar to that of an "Oxbridge" college. The "chambers" were originally used as residences as well as business premises by many of the barristers, but today, with a small number of exceptions, they serve as offices only.
Each of the four Inns of Court has three ordinary grades of membership: students, barristers, and Masters of the Bench or "benchers". The benchers constitute the governing body for each Inn and appoint new members from among existing barrister members. As a rule, any barrister member of the Inn is eligible for appointment. In practice, appointments are made of senior members of the Bar, usually QCs, or High Court judges or those who carry out work on behalf of the Inn, be it on committees or through the training of students and other junior members.