Magic Roundabout (Hemel Hempstead) viaduct. The BP building was found to be unstable due to defective reinforced concrete and the exit had to be closed. The building was demolished but the original route was not restored, although a newer side exit from the roundabout replaced the junction with Marlowes off a side road. Magic Roundabout (Hemel Hempstead) The "Magic Roundabout" in Hemel Hempstead, Hertfordshire, England, is the familiar name given to the Plough roundabout. The familiar name comes from the children's television programme, and is also used for a similar junction in Swindon and the M40 junction in Denham. The official name relates to
The Magic Roundabout which was also adapted by Thompson and shown in Britain as "Dougal and the Blue Cat". The cat, named Buxton, was working for the Blue Voice who wanted to take over the garden. The Blue Voice was voiced by Fenella Fielding and was the only time that Eric Thompson called in another person to voice a character. The Blue Cat heard of Dougal's plan and made him face his ultimate weakness by locking him in a room full of sugar. In 2005, a film adaptation (also called "The Magic Roundabout") was released. The movie was about Dougal, Ermintrude, Brian and