Department of Transport signs at M20 J13 indicating old route which remain (and will necessarily continue to remain for its primary signposting to Folkestone as the old route is the DoT`s designated primary route):

 

Old wide treelined boulevard route to be bypassed:

 

New 2 mile detour route along residential streets:

Amenities on old route to be bypassed

Some amazing memorials to former mayors, British and Greman military and others, in the cemetary opposite the sports grounds:

NB: Valley Leisure Centre and Sports Centre on the old route are now separately newly signed.

There are no tourist amenities on the new 2 mile detour route, which passes through the poorest area in the whole of Europe.