sentences:  covers the historic extent of Middlesex and the entirety of the boroughs of Richmond upon Thames and Barnet.This area overlaps with the scope of the London Football Association, the Surrey County Football Association and Hertfordshire County Football Association.This means that many clubs are eligible for affiliation with more than one county football association, such as Ashford Town (Middlesex) who are affiliated to Middlesex and Surrey, and Potters Bar Town who are affiliated to Middlesex and Hertfordshire.