In general, the variations between British English and US English:
When adding -ed or -ing to a word, we (Brits) are a lot more likely to double the final consonant. To avoid doing so would sometimes encourage a vowel sound in the stem word to go long rather than short.
We use 's' a lot more than 'z' (e.g. realise).
We have an extra 'u' a fair bit (colour).
Switch 're' and 'er' sometimes (e.g. theatre, centre).
Yes, the edge of the pavement (sidewalk) is a kerb. We do use curb, but not for that.
Excellent film. Maggie Smith's portrayal was one of her usual stunning performances. It's hard to know what a JW would say. I was once working on a shop front in the town centre. A (JW) voice behind me asked if I knew who was the king of this world. I thought they at least taught them manners to pass by people who are clearly busy.