Adding a new city (Didcot, Oxfordshire)

Hi, I would like to add Didcot, Oxfordshire to CityStrides, It has clearly defined boundaries on OSM as shown by: Relation: ‪Didcot‬ (‪73835‬) | OpenStreetMap
However it is not a city yet. Is it possible to make it a city (nested within South Oxfordshire)? I understand that similar questions have been asked 100s of times but any help would be appreciated.

I’ve added it to the missing city tracker, but I do wonder if we’d be better served if I imported everything at admin level 10 within South Oxfordshire as nested cities instead of just this one.

Thanks, I agree it would be better to add all of them (more cities for me to run!)