Taken a while but finally decided on a photo album system I’m happy with. Sadly it doesn’t fully integrate with wordpress at the moment but that may be a good thing! Just means the photo album section is free from all the back end code and styling template of wordpress that can slow things down. Making the photo album very responsive.
https://scouk.net/photo-album/
… more albums to be added once I take time to go through photos of some of the more recent road trips that never made it online.