Sir – In one of the halves of the Headington roundabout, there is a curious enclosure or stockade, railed off for some uncertain purpose.

It currently contains a spare traffic light. On one side of this enclosure there are set of cardboard tubes, that enclose small trees, that appear to be patiently awaiting the arrival of tree planters. They have been doing so ever since the roundabout was constructed and that was at least five years ago.

So is there some landscape architect in the highways department, or whoever is responsible for such unloved enclosures on roundabouts able to inform us of their intentions for these trees, whether they be dead or alive and can someone also explain the purpose of the ugly enclosure?

Ian Davis, Headington