When Maude is in her car waiting for Roland to come out of the museum, her window is down. When he gets in the car and they begin talking, it is rolled up.
When the historic Henry (J. Northam) begins to unthread Christabel's (Jennifer Ehle) corset drawstrings at her back, he pulls each loop free: after then showing from her face forward for over shoulder kiss, shot returns to her back, as he seductively caresses her side and hip - all the corset threads are back to perfectly crossed in place.
Everyone was handling rare, old documents with their bare hands. Anyone doing this kind of research would know to wear gloves to protect the fragile paper. Gwyneth Paltrow handled them with blithe disregard because her mother is Blythe Danner.
Bailey's driving license has 'Miss Maud' on the line for forenames. UK driving licenses don't have titles or Mr/Mrs/Miss on there.
Some people think it was a goof that they handle documents without gloves. In fact, most institutions have found that NOT wearing gloves is better as bare hands are much more sensitive to the amount of pressure they are putting on fragile documents and people are therefore less likely to damage them.
During the love scene between Christabel and Ash, the close up shows her ears are double pierced. Victorian women could have pierced ears but would not have had double piercings.
Maud's surname is Bailey which she got from Christobels sister and brother in law. However Maud is related through a daughter so unless Mauds second great grandmother May married a man named Bailey Maud herself would not be one.