UK is the best for hiking for sure! And the landscape is the best proof for that! I wish we could go somewhere this weekend, but have to stay inside. Our kid is feverish...
But I was interested to go to Norfolk one day and explore the area! So your post is a great help!
What a bad timing to feel unwell (i guess there'a never a good time though... ) hope your little one recovers soon. I'm sure he/she will love the train ride!