Instant refers to instant transfers and updates, as @Seb mentioned.
It doesn’t work on a mobile, but on a desktop computer you can hover over the underlined words and it’ll give you a definition.
Happy to look at any changes though! I was just mindful that the headings took up a lot of room so tried to keep them short.
@pootle - if you know the features of the Virgin current account, happy to get it added. Or you’re welcome to give it a go yourself if you fancy.
Edit
Made a few changes on the standalone version. Hopefully that’s a bit clearer 