While Amazon offers a variety of Prime perks for Britons, it can often take a while for some of them to make it across the Atlantic. Take, for example, Prime Reading: a "free" book subscription that launched in the US last October but is only now coming to the UK. Unlike Kindle Unlimited -- which offers unrestricted access to over a million books, magazines and audiobooks for £8 a month -- Prime Reading is bundled with Amazon's annual subscription and delivers a rotating selection of popular e-books, magazines and short content.