the Amateur Athletic Club Championships (1866-1879) and
the original UK Athletics Championships which existed from 1977 until 1997 and ran concurrently with the AAA Championships.[2]
During the period of overlap between the AAA Championships and the original UK Athletics Championships, the former was regarded by statisticians as the principle national championship, despite the presence of foreign guest athletes. Champions in the latter event are, however, were also recognised as national champions in their own right.