As an interim solution I have worked out that I can build a custom look via the system activity explore that includes this information and can also surface a direct edit link etc, but it seems weird not to be able to filter on that or see that within...

I think you are after Access Filters rather than Access Grants with something like below. https://docs.looker.com/reference/explore-params/access_filter access_filter: { field: tenant.id user_attribute: tenant_id }Otherwise you can also use something<!-- -->...