In my (generally affluent) zone 4 neighborhood in London, the number of green plate EVs had multiplied like rabbits over the past few years, but few houses have off-street parking. A huge percentage of the cars parked on street are EVs.

But since you can plug in to charge at many street lamp posts and since most people don't drive their cars much on a day to day basis, it all works fine even without off-street parking. There are also several reserved medium-speed charging spots around the neighborhood and lots of fast chargers at the local large grocery store.