The Highways Agency started overnight drainage maintenance work on the M5 between junctions 4a and 5 this week on both the north and southbound carriageways.
http://nds.coi.gov.uk//content/detail.aspx?NewsAreaId=2&ReleaseID=422455&SubjectId=2
seen at 17:54, 14 December in Queen's Awards for Voluntary Service News - national.