Hi all, bit of a strava numpty. Ride cwmcarn once a week and have noticed that the last ‘fast’ sections do not get recorded. Is this just a fault with my phone or have the health and safety mafia got to strava

the tracking stopped or the segment didn’t show?
It could have lost signal or the segment may have been removed/flagged (unlikely) or your track may not have been close enough to the segment track.

definitely on the right track for each segment (all single track). on every ride same sections are missing from strava breakdown and even map has a gap (although strava gives me overall time) . does anyone ride twrch trail and get a full strava breakdown of the final few descents?

Two possibilities spring to mind.
A) The segment has been marked as hazardous. Not sure if these then show up.
B) The segment has been marked as hidden, which often happens when one segment is a sub section of a larger segment.

https://strava.zendesk.com/entries/20945957-Hide-Unhide-Segments