The story of the A3 starts way back in the Tudor times where it began life as a trade route from Portsmouth Docks to London. Later in the 1800s, changes were made before finally being abandoned in 2011. What remains today of this ancient relic.. I go on an explore to find out. Welcome to Britain's Abandoned Roads. In this series, I go out to explore some of the UKs abandoned or disused roads. Old roads in the woods, motorway junctions or forgotten slip roads, this series has it all! Join me as I travel all over the country seeking out forgotten and abandoned infrastructure.