Without discussing the specifics of any particular Nominet promotion (which is against their rules) I wanted to alert you to a general issue: their system records the "normal" price for the registration or renewal you're attempting, not the promotional price if any. You will only get charged the "true" promotional price when you receive the invoice. Let's pretend you have signed up for a fictional deal that allows for £1+VAT renewals. If you renew 100 domains under that promotion, you'll owe Nominet £120 at the next billing cycle. But those 100 domains will be recorded as £450 on the system until then. So the amount you've spent since the last invoice will go up by £450, and your credit limit will go down by £450. What this means is that you may need to raise your credit limit temporarily when a promotion rolls around. Otherwise you won't be able to spend the amounts you thought you were going to spend on it. It also means that you have to keep a careful tally somewhere of exactly how many transations you've put through at the promotional price, because you can't find out via the Nominet back-end. You'll only find out when you get the invoice next time. Hope this helps someone.