Ask UK

Depends on where you need to get to, and how much money you have. Intercity trains are "ok" but can cost an arm and a leg. Bus quality is super variable throughout the country. But if your used to USA you will be surprised at how many places you can walk to.

It really depends on your travel plans and needs. If you have time on your side and are mostly just visiting cities then trains and National Express coaches will serve almost as well as a car with a little planning.

If you want to head into the wilds of highland Scotland, then a car will probably be necessary.

I personally wouldn’t want to live here without a car, but that comes with a few caveats.

• I don’t want to live in or near cities. I live in a well-connected area (as in there’s a motorway) but quite far from nearby cities.
• I don’t expect to be able to drive in cities. I make plenty use of park and ride which, in my experience tends to be very good.
• trains are insanely expensive here. The tories played a big brain move and privatised the trains companies, so now they’re essentially priced to the point of being unusable.

Elaborating on trains. Availability tends to be spotty (trains don’t run overnight and end ridiculously early, for instance). Price tends to be SUBSTANTIALLY more expensive, even if you’re driving alone, and even if you factor in running costs. Slap a mate in the passenger seat and split the cost, and you’re both saving a ton of money, and possibly time.

In and between cities, it's feasible (obviously easiest in and around London). Train tickets are expensive, but fine for occasional use.

In rural areas, almost impossible. Buses are unreliable, slow and very limited. I try to keep car use down, but in a suburb that's hard, let alone proper countryside. At least the wealthy rural folk seem to be embracing EVs.

Fellow American ex-pat. I lived in the UK for many years, am now in France. I lived in Sussex, Norwich, Brighton and Oxford, and the only time I didn't use my car every day was when I lived very close to the rail station in Sussex. And paid £3000 a year for a gold card (it's a lot more now).

The buses can be very expensive (looking at you Norwich), and and are often slower than walking (Brighton knows I'm talking about it). Having a folding bike was essential, if that's a possibility. Definitely check your city first.

It's generally not quite as good as many mainland European countries, but most UK cities are very walkable, and most are served by a railway station or at least a National Express bus. Some cities have fairly spotty public transport (e.g. the buses stopping around 6pm which is no good if you're not staying in the city and want to get there for a night out). Unfortunately the public transport tends to be expensive compared to mainland Europe. For instance I was helping putting an event on in Bilbao last week, and did a week commuting in and out the city and it cost around 7 euros using the metro and trams for the whole week. In many British cities, you'll spend that much per day for a similar travel pattern.

I don't drive but I don't rely on public transport any more - I mostly cycle or walk to where I need to get to.
I live in a suburb of a large-ish town but I have most basic amenities within a 10 minute walk - a large supermarket, schools, parks, pharmacy, smaller grocery shops (corner shops), cafe, hairdressers etc.
That's fairly common in the UK unless you live in a small town or village.

The bus services only go into the town centre and the service is spotty, so usually it's slower if you need to get to another suburb at a particular time.

My partner does drive however and as someone else said, it'd be hard to get out and about with kids without a car.

Need more info tbh...what do you want to be able to do? What would be "bad public transport"? I live pretty happily without a car but I live in a way so I don't need one