Brighton & Hove is a famously progressive city in the UK whose council (despite leadership changes) has had an ongoing mandate to reach net zero by 2030, and roll out transportation infrastructure that favours walking, cycling and public transportation.
Because of the local politics, it has basically been able to continuously roll out upgrades (large and small) on streets across the city without any significant impedance to progress to my knowledge. It's not perfect, but it's an extremely noticeable difference compared to the UK baseline.
An excellent and sorely needed project will be under construction starting this winter, which is a complete overhaul of the Old Steine roundabout and intersections with North Street, St. James' Street and the 3 seaside roads.
This is an extremely busy intersection for pedestrians, personal vehicles and buses, linking up many different bus lanes and many important tourist destinations (such as Brighton Pier and Brighton Pavilion) on foot. This area is kind of hellish and clearly in 1960's mode: loaded with car lanes, narrow paths, uncomfortable crossings and no segregated cycle paths. Getting from one side to the other can take 3-4 pedestrian crossings. There are many bus stops, all spread out in places that are not hugely intuitive and walking to another can take a few minutes.
This project will complete a fully physically separated north-south cycling corridor through the direct center of Brighton, connecting it with National Cycle Route 2 on the beach. It will give pedestrians greater right of way and generally really clean up what is a generally not a great looking chunk of the city with trees and improved lighting.
It carves out more dedicated bus routes and it seems like it will make the layout of bus stops around Old Steine less labyrinthine.
It also seems like street-side parking will basically be eliminated outside of specific circumstances (eg. a few parking spaces for a nearby GP practice) and disabled vehicle users.
It is pretty excellent - the main issue I have is that further north, the segregated bicycle lane takes space away from an already crowded pedestrian area. This will almost certainly lead to pedestrians overflowing into the bike lane, which is what routinely happens nearby on NCR2 west of Brighton Pier.