The vehicles are driving on the left side of the road, which is standard in the UK. The architecture features white, multi-story terraced townhouses typical of London. The green construction barriers and the overall street layout strongly suggest a residential area in central London. I am fairly confident this is in the United Kingdom, specifically London.

then: forward

The white, stucco-fronted buildings with large trees and the specific style of the road markings are quintessential of the Kensington or Notting Hill areas in London. The double yellow lines confirm the UK location. The overall atmosphere and architecture are very consistent with the upscale residential streets near Hyde Park. I am quite confident this is London, United Kingdom.

then: guess