I had an accordion template installed on this page https://prettybrave.com/pages/our-stockists but have just updated my theme and the styling has been removed.
I copied over all of the code when updating the new theme but I must have missed something. Can someone please help me out?
Without knowing how it was looking before, there is no chance someone would be able to help. Do you have a preview URL for your old theme? Have you made a copy?
You've missed this library - accordion-scripts.js. Make sure you copy a link to it over from the old theme. Also make sure you have jqeury-ui library referenced and it goes after the reference of the main jquery library.