But what has happened, is that in Bridge under Preferences > General > and then I tick 'Double Click Edits Camera
Raw Settings In Camera
Raw.
So I've ticked that box and now I can highlight the amount of JPEGs I want and when I double click the highlighted pile it opens up in Camera
Raw. The problem? There's only one image. When I press 'Done' the next one appears, and so on. But they're not stacked on the side like normal, so you can highlight a few at one time and do the same edits on whatever is highlighted. Which is basically the whole point of opening several items at once.