Before that RTO, there was a prohibition on motor vehicles entering Connell Crescent from Hanger Green (Mo-Fr 15:00-19:00) - see https://www.mapillary.com/app/?pKey=382635383152920

The effect of the RTO was to move this restriction sign down just past the hotel (I have confirmed the sign's new location by survey) so that vehicles could reach the hotel's drop off/pick up bays, but it is still not permitted to use the road as a rat run.

This has been accurately reflected on the way https://www.openstreetmap.org/way/1256707401 in changeset #148113648 (by another user) so I think this note can be closed