Walking is a good opportunity to think deep thoughts. This is why Charles Darwin had a walking path set up in his garden at Down House, which he walked up and down multiple times each day (its definitely worth a visit).
But as thinking deep thoughts is hard, another less brain-straining option is to look for different kinds of post boxes. Finding a "VR" (one from Queen Victoria's reign) is always satisfying.
And an Edward VII is also quite rare, as he wasn't on the throne for very long. But on this walk so far, I've come across a couple of examples which I've never seen before. We can call the example below the paradox of choice. A small village needs two postboxes right next to each other? What do the inhabitants of this place do to need such posting capacity? How do they decide which post box to use: that of Queen Elizabeth or her father, George VI?
Post boxes are usually (always, I thought) red. I've heard that the Post Office has painted post boxes gold to celebrate the home towns of gold medallists from the last Olympics. So far I haven't seen one. But what about this one: a white post box! Never before seen.
On with the walking, to either think deep thoughts or spot more unusual post boxes...