article: Great Britain road numbering scheme
links: A2 road (England) M8 motorway (Scotland) A2 road (Great Britain) Portsmouth A1 road (Great Britain) Edinburgh Luton Greenock Dover Holyhead Falkirk Inverness M4 motorway M2 motorway (Great Britain) London Rochester, Kent Categorization Great Britain Glasgow List of motorways in the United Kingdom A9 road (Great Britain) A74(M) and M74 motorways