  Urban theorists, social reformists and philosophers have considered the city
as a living organism since Plato. However, despite extraordinary advancements
in evolutionary biology, now being used to explain social and cultural
phenomena, a proper science of evolution in cities has never been established
since Geddes' work at the dawn of the Town Planning discipline. Commencing in
the tradition of Urban Morphology, this research develops and validates a
statistically reliable and universally applicable urban taxonomy. The research
solidifies existing definitions of built form at the scale of the urban fabric
and identifies the constituent elements of form in 40 contemporary UK cities.
Quantifiable measurements of these elements allow mathematical descriptions of
their organization and mutual relationships. Further, an optimized list of
indices with maximum discriminatory potential distinguishes between cases from
four historically characterised categories: 1) Historical, 2) Industrial, 3)
New Towns, 4) Sprawl. Finally, a dendrogram is produced that shows the tree of
similarity between cases, where the great divide between pre and post WWII war
urban form is demonstrated. This work shows that: a) it is conceptually sound
and viable to measure urban fabric utilizing public, big-data repositories, b)
the proposed urban morphometrics system accurately characterises the structure
of urban form and clusters cases properly based on their historical origins, c)
scientific models of biological evolution can be applied to urban analysis to
understand underlying structural similarities.
