Let me first say, I cannot remember who recommended him on this forum, but I have to thank you, whoever you are!
We booked a full day tour of Hadrian's wall with Peter and he was the absolute highlight of our entire 17 days in England! We landed from Texas the day before in Newcastle and took the train to Hexham. Peter picked us up early at our hotel the following day, drove us to the various historical sites and museums and was so detailed. He asked us on the drive to the first location exactly how much we know/don't know and want to know. We said "Start from Scratch!" and he did. He was so patient with my husband and I and all of our questions. This was our first trip to England and he gave us so many recommendations for a return trip to the Northern portion of England that we are already planning to use him as a guide for a further portion of Hadrian's wall. He is a retired history teacher and his knowledge of most places is astounding. He was very engaging and not boring or sounding as though he was reading from a script. We would not hesitate to use him again nor would we hesitate to recommend him. He had so many details and a few guesses as to why Hadrian /the Romans did this or that, it really made us wish we had booked him for 2 days in a row so we could do more.