You really need to have a good read around here [Only registered and activated users can see links. ] as everything is there.
1. Find a UK map that we DO have a meta for AND is compatible with your (9500) navcore
2. Run FastActivate to update with latest known metas/activate the map/patch the navcore

Plan b) Buy the latest Rider map then create/share the meta with us, see [Only registered and activated users can see links. ]