Good driving map for Great Britain

Go to Amazon and search for "A to Z Great Britain Road Atlas"
They're available in various sizes.

Thank you Gary! I will check it out.

The Michelin Great Britain & Ireland 2012 (Map # 0713) is 1:1,000,000 or about fifteen miles to the inch. You can order it from any of the big book stores. Or you can pick up any of the A-Z series at a variety of scales at the first freeway rest center you come to. Now, about the OS. Do you want to sell it? I'll even drive up and pick it up if it's the spiral one that covers all three countries. Those things are hard to come by.

Thank you Ed! I didn't realize that I had a treasure, so I had better keep it. It is a 1992, spiral bound, that covers England, Scotland and Wales. I figured that it was very out of date, but I guess the little roads never change. I might try to pack it after all.

Mine's a lot older and has gotten to the point that it's mostly scotch tape. I've never been able to find a new one. If you ever change your mind . . . .

We use AA maps for motoring. No GPS for us (yet)! http://shop.theaa.com/store/uk-1 They have A3, A4 and A5 sizes with under 4 miles to the inch

The AA maps that LInda recommends are excellent for touring. They clearly show most of the historic and megalithic sites that are of interest to tourists.........We use the 4 miles to the inch scale ones and have never gotten lost during six road trips to UK, Ireland, and France........... I use the AA atlas to navigate while DH drives and the Michelin map at about the same scale in the evening for planning the next day's route...................Edit: the atlas is the one that Nigel recommends below!

As always, thanks so much for all your help Nigel!

Another thought ... If you are confident with your GPS, that is that you use it where you live and know how to use it and its features well, and if you can do your general planning using your old spiral bound before you go, and if you will be near a high street, mall, or shopping centre before you start driving - = - I have a cunning plan. When you get here go into a "The Works" discount bookstore and get the atlas at this link which is under £5 and at 16 miles to the inch or this one which is at 3 miles per inch and sold by them for only £1.99. Those are the ones we get every few years and which have all the known speed camera locations and are easy to read and use. The first one is a glovebox large flatter size which does suffer from a lack of detail (as a consequence of its small size), the second is larger and is the one I suggest to most people. These are available at lots of places like WH Smith, its just that The Works is consistently cheapest on the High Street. There's a store locator on the website. Then when you get home send a private message to Pensacola Ed and sell him your old atlas which he covets.
= - = edit: a bit more in the next post, and I modified the aspect above

a bit more: An atlas that is 20 years old will have the majority of its information correct, but there have been many many changes in the last 20 years. Lots of new bypasses have been built, many former "A" roads have been renamed to "B" or unclassified roads and replacements built nearby. A great example is the old A40 through the Cotswolds from Oxford to Cheltenham. Much of it has been realigned, some dual carriageway, and the former roadway has been renamed to A or B 4040 (and I think also 4014 or some such) and its called another B name elsewhere.