Burning Q on how to walk in England?

I’m in England for a visit and realizing that even while walking, the driving patterns may apply. My question is this:
When walking down the sidewalk in England, one should try to walk on the left? And when faced with another person in a sort of pedestrian stand-off, and one must move, one should move to the left? It’s all opposite in US.
I also have questions about how to properly drink tea—what to do with all the gadgets (for sifting and soaking etc) they present you with that is—but perhaps that needs to be another post.
Feeling heathenish.