Thank you for taking the time to answer. Using this method of creating new layers for each page leaves me with hundreds of layers on a 30 page site, each page has many layers and there's an ever growing amount of pages.
What I'm really looking for is a way of placing them in nested folders like we can in PhotoShop. When there are so many layers are involved I find it's a much easier way of keeping them organised. Maybe we could also have an option to display just the layers used on any particular page via a small toggle switch on the panel.