YouTube member azumatakeshi filmed a video of a trip on the last run of Tobu 1800系 train 1819F on May 20, 2018:
The train essentially ran the route of the Ryōmō limited express service, particularly from Tobu Isesaki Station all the way back to Tobu Asakusa Station via the Tobu Isesaki and SkyTree lines.
YouTube member (and JNS forum member) ayokoi also uploaded a video of this last run: