Does anyone know who to contact to have changes made to the GPS database used for mapping delivery routes?
Every firm who delivers to the various cottages on this farm encounters problems with a route that is not suitable for vehicles; we get drivers many days who try to access the next door farm on a track that’s unsuitable and needs removed from the database as a viable route to use. Equally, drivers try to cross to us on the same route and dead-end on the path that GPS thinks is a road.

Couple of these near me.

Start by submitting a map change request on google maps. You can cite satellite/streetmap as evidence the map is wrong!

We had a few issues, reported to google maps and seems to be fine now.

TomTom allows the choice of road-type when choosing routes, and I believe most actual satnav systems like Here, CoPilot, etc, do too.

Submitting an error report to Google Maps is the best way forward. The vast majority of courier firms use HHT’s (handheld terminals) that use Google Maps to tell the driver where to go so getting that altered will work quickest.