As I continued to walk along the foreshore I started to pay more attention to the ground below my feet and within a few yards I found a broken clay pipe. I returned to Tom and Alan and they told me it was a good find considering it has the Royal crest imprinted on it and the makers initials. They suggested it could be from the mid 1700's. I will investigate more!
I continued walking along as far as the OXO Tower with my eyes firmly fixed to the ground.
Thank you Tom for being #1, I really appreciate you helping me out.