I first reported this leak in November 2015.  It was eventually attended to in January 2016, but it is now worse than ever - water bubbling up and forming a trail across the pavement a long way from the source.  Also, I notice that that the grounds man has had to cut the grass around the waterlogged ground leaving a large uncut area.  I've watched it getting worse every time I walk the dog past it.  I haven't re-reported it before as there are 16 flats that look out on the location and I thought that at least one of them would have reported it before now. or if not the company that cut the lawn.  It does need urgent attention.