Southampton is a major UK port which has good transport links with the rest of the country. The M27 motorway, linking places along the south coast of England, runs just to the north of the city. The M3 motorway links the city to London and also, via a link to the A34 (part of the European route E05) at Winchester, with the Midlands and North. The M271 motorway is a spur of the M27, linking it with the Western Docks and city centre.
Which motorway connects Southampton to London? (If the question is unanswerable, say "unanswerable")
M3