These organizations, similar to our US National Parks Service, oversee many cultural heritage sites. Consider joining to support them while you visit.
English Heritage - They produce a helpful podcast as well as a YouTube channel that can help you prepare for your trip. The podcast was particularly helpful as I planned my itinerary. Non-Brits can join for a period of 9 or 16 days at a reduced rate, called an Overseas Visitor Pass.
National Trust - They also produce an amazing podcast and have different levels of membership.
Cadw - This organization, the Welsh equivalent of English Heritage, lists Romano-British sites here.
If you have the time before you plan your trip, take advantage of these helpful books. Archaeological sites mean so much more with a little background knowledge to guide you.
Roman Britain and Where to Find It - I wish I had had this book before I took my trip. It's doing exactly what this Website aims to do. START HERE!
Trekking Hadrian's Wall Path - We didn't really use this book because we weren't hiking the wall, but when I return to England to hike the Wall, THIS will be the book I'll use. So much detail about every little thing (history, towns, hostels, restaurants, etc.) along the wall path.
Roman Britain: Outpost of the Empire -Â Fantastic illustrations and maps make this history book hard to put down.
One of the first things I did when I started planning my trip was to buy a map of the UK and start learning it. I spent evenings just looking at it. I wanted to be familiar with county names so that I when I began finding sites I wanted to visit, I could sort them into areas or "counties." This step was crucial in planning.
National Geographic United Kingdom Adventure Travel Map - This map was nice, light, and bendy.
Roman Britain Os Historical - the best of the best, this map shows every Roman British site in the UK. Beware - it's huge and unwieldy. Good for planning, but don't try to open this thing in a car - impossible.
Roman Britain - this site could be so helpful, but the ads are so terrible that it's hard to engage with. At your own risk!
Roman Invasion of Britain - an overview.