If your site does not meet the above description, but is relevant to a specific part of the UK, then it belongs in that part of the directory.
Recall that every site submitted is categorized by at least one editor, often more. Moving sites that are submitted in the wrong place to where they belong takes time, sometimes considerable time. You are therefore strongly advised to take a few minutes to choose the most applicable category for your submission. If necessary, read about dmoz: it will repay dividends in your use of the directory as well as potentially getting your site listed a lot sooner. This effort put into placing each site is for the benefit of users. Please try making the same effort when you submit: you might like it so much you consider becoming an editor (you should apply for a small category at first).