Photomap

[Image taken 23.4.21] Clifton Moor Gate, junction with Hurricane Way, York. The actual width of the footpath measured between the kink in the railings and the hedge growth is 88cm. For the usable width you subtract 25cm from each side... The Sustrans guide Space requirements
www.sustrans.org.uk/for-professionals/infrastructure/sustrans-traffic-free-routes-and-greenways-design-guide/sustrans-traffic-free-routes-and-greenways-design-guide-contents/2019-design-guidance/part-2-design-details/6-space-requirements
has a table 'Typical footway widths for people walking'
For a person walking unaided it suggests the minimum width required is <0.7m. For someone pushing a double pushchair it suggests 0.75m.
See overview image from today: #167749. For all issues around here search on Hurricane Way and Clifton Moor Gate.