I'm in his FB group and asked him about his pb's and ultras in uk. He responded back on ultras but gave no info on his pb's.
All the latest Garmins include cadence. I don't know about TomTom.
The Scot wrote:
I am not even sure I have seen a Run on Strava with cadence, maybe I saw one once from a Fenix? If someone has an example can they post a link to the session please?
Random example: https://www.strava.com/activities/638163982