I am now a retired civil engineer. I use Z9, D5, D4s, D800, D700 Nikons with Sigma f2.8 lenses plus my iPhone and Lumix TZ60.
The many albums of motorsport and Harrow Car Club are linked to car club websites so they can download their favorite shots.
I also take photos for UCS RFC which can be found here - www.flickr.com/photos/145134764@N05/albums
These are often used by the Hampstead and Highgate Express.