Google.co.uk appears to be testing out new placement locations for URLs on their organic search results pages. The display URLs have been moved up from below the description snippet and moved to the side just underneath the title of the organic result.
Screenshot as below for the "car insurance" SERPs. Normally, the URLs are located underneath the website description.
There has been no official word from Google on whether this new SERP layout will become permanent or be fully rolled out.
[Source: PPC blog]