This article is within the scope of WikiProject Highways, a collaborative effort to improve the coverage of highways on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.HighwaysWikipedia:WikiProject HighwaysTemplate:WikiProject HighwaysHighways articles
This article is within the scope of WikiProject London Transport, a collaborative effort to improve the coverage of Transport in London on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.London TransportWikipedia:WikiProject London TransportTemplate:WikiProject London TransportLondon Transport articles
This article is within the scope of WikiProject London, a collaborative effort to improve the coverage of London on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.LondonWikipedia:WikiProject LondonTemplate:WikiProject LondonLondon-related articles
This article has been given a rating which conflicts with the project-independent quality rating in the banner shell. Please resolve this conflict if possible.
Note: This article was written independently, from scratch using only maps and local knowledge as a reference, before I discovered the SABRE web page http://www.sabre-roads.org.uk/wiki/index.php?title=A400 after writing it. This article has some similarities to the SABRE article, because it deals with and describes the same underlying facts about the route of the road and the places on it, but, as the article history will demonstrate, is not in any way a derivative work from it. -- The Anome (talk) 19:06, 4 July 2012 (UTC)[reply]