What change is expected here?

You mention "Thames Valley Parkway/Trail". This name is NOT correct since there are two distinct "trails" near here.
a) Thames Valley Parkway (Relation 3473472) is an asphalt trail throughout London.
b) Thames Valley Trail (Relation 3444520) is mostly dirt trail from SW Middlesex Count y to NE Middlesex County connecting Elgin Trail to Avon Trail.
In London, sometimes TVT and TVP overlap (see way 312017318)..
The trail at this NOTE is not part of TVT nor TVP within OSM; which I believe to be correct.