- π¬π§United Kingdom entropea
So I did a didn't get any warning when uninstalling the BEF module (Gr8 module, btw! :)
drush pmu better_exposed_filters [error] A non-existent config entity name returned by FieldStorageConfigInterface::getBundles(): entity type: taxonomy_term, bundle: offences_relating_to_directive_2008_99, field name: field_offences_relating_to_direc [success] Successfully uninstalled: better_exposed_filters
The View in question is now gone without warning.
Sadly it was two days of work without doing a cex, ah well. Just hoping this behaviour can be changed to save any future heartache.