Unlike the list at Squares in London, which partially overlaps, these places all have a clear communal garden element and may be named other than Square; commonly in order, Gardens, Crescent, Place, Fields and Circus reflecting the diversity of the city's complex street layout.
Non-square instances are only in this list if strongly, inherently notable for architecture, use or size – a common selectivity in the study of the history and use of such spaces.
The list deliberately avoids many similar public greens, verges and crescents outside of Central London.
So too the few large public green places (commons or parks) away from the City which are not shrouded by six-foot (or more) walls even if faced conspicuously by buildings.
Truest garden squares meet the recognisable criteria of a shared internal zone, faced chiefly by buildings' fronts having one or more open approach ways, so are not beholden to legal name nor precise shape.