I am a courier and my old atlas was falling apart. Some of the streets in London have changed priorities so I thought 'buy a new atlas and get the latest info'. Unfortunately, although this is the latest edition it has not been updated.
When my laptop told me my hard drive would fail imminently I though 'here we go another new laptop'. So I googled the part number and up popped this. It is now installed and working perfectly, and was much easier than I thought it would be. But you must have the rescue discs you should have made when the machine was new.