Google earth has just added a new feature which lets you look at street level images of many UK locations including residential areas.
Being google it's free, and I think the amount of data that has been mapped is an absolutely amazing achievement.
Just use google maps as normal to find a place your interested in looking at. Then drag the yellow man that that has been added to the zoom bar corner over the area. A blue outline will appear around streets that have been mapped.http://maps.google.co.uk/maps