Unless someone here has new info, ancestry.com is still the most comprehensive for eras post first UK census. It is very time consuming, hence why retired folk love doing it. We found it best to purge for a month sub’s, then cancel. One hellish thing for me was checking out Smith‘s in East...
(Pre DNA testing) simply through Ancestry.com which we sometimes dabble at, I found that my Dad’s mum was a divorcee before she married my Grandad. Both long passed. Don’t think my Dad knows, I haven’t mentioned it.