Remarkable the Tory strength in the south-east compared to the rest of rural southern England.
Anglicanism - note that rural East Sussex where they were a bit weaker had substantial Nonconformist strength, which translated into Liberal votes.
Sussex overall being one of the most observant Church of England counties. If "intense" was ever an appropriate description of sentiment toward the Established church, then it certainly applied to Lewes. There's no point saying it's a strange little town, because every town is in its own way... But visiting Lewes, I felt like it was!
It must have had the strongest swing towards the Conservatives of any remain voting constituency in 2017 by a mile. Even despite proximity to Brighton etc, etc...
Not wanting to go all #analysis either, but there is an interesting similarity between CoE/non-conformism on voting habits in England and Catholic v Laïc voting traditions in France (and on industrialisation) - except Anglican England was far less peripheral than Catholic France.