A faded or vandalised TSRGD diagram 956 sign does not revoke the explicit authorisation of cycling. The fact that the route is explicitly signed with a fingerpost also serves to confirm this.

It is not a sidewalk/pavement, so Highway Code Rule 64 does not apply. Even if it were, the explicit signage would override the general prohibition.

via StreetComplete_ee 57.0

Attached photo(s):
https://westnordost.de/p/207464.jpg
https://westnordost.de/p/207465.jpg