Hi,

Looking at the aerial imagery, for example Ripley Close ( https://www.openstreetmap.org/way/38394100 ), this is clearly a residential street not just parking access. Incorrectly changing almost every named residential street in the northern part of New Addington may have adverse effects on both correct routing and rendering.

Please refer to the relevant pages in the OSM wiki:

https://wiki.openstreetmap.org/wiki/Tag:highway%3Dservice
"The highway=service tag denotes ways used for vehicle access to a building, parking lot, service station, business estate, beach, campsite, etc. Service ways are usually not part of the public street network and may sometimes be inaccessible to the general public"

https://wiki.openstreetmap.org/wiki/Tag:highway%3Dresidential
"The highway=residential tag is used on roads that provide access to, or within, residential areas. While these roads typically allow through traffic, they are not normally used as through routes. Most traffic on a residential road will be for the access to, or from, residential properties."

Do you need any help reverting these changes?