C, in a previous life I produced a radio show and we had Matt McLachlan from Battlefields.com.au on the program many times. He was very knowledgable and listeners reported they had a good experience when they went with his company. But that will give you an Australian perspective.
It's not too hard to do a self-guided tour. My advice (and I did this) start at the Museum of the Great War in Peronne (a couple of hours north-east of Paris). You'll get a great overview of the war, find details of the places of significant battles relevant to soldiers from your country. The museum has great resources (maps, pamphlets) so you can guide yourself. We hired a car in Paris and made our own tour, following in the footsteps of my wife's grandfather - amazing experience. Most moving part of the trip: everywhere you'll find small cemeteries, surrounded by trees and shrubs. Inside the gate of each there's usually a stone box, inside there are 2 books. One is a list of the names of those buried there, which unit they fought with and when they were killed. The other book is a visitor's book and the comments are always so poignant and moving. It's a great experience.
Phil about 7 years ago
Like above, we completed our own car tour (self drive) last summer of the Normandy Beaches and all local points of interest from Caen to Cherbourg and inland too. It was easy to follow local instructions and directions and we stayed at hotels along the way that we came across.
It was a great trip and experience would recommend to everyone if they get the chance do it. almost 7 years ago