“…Bobylev, 2010b;Evans et al, 2009), however, the wider role of increased development in UUS in creating an economically, socially and environmentally sustainable future is being overlooked. Unfortunately issues associated with unabated, ill-planned expansion of UUS in major dense cities are being ignored and will have likely future adverse impacts on the surrounding environment, not least where multiple structures exist below ground (Bobylev, 2013;Hunt, 2005;Hunt and Chapman, 2009;Sterling and Godard, 2000;Williams, 2008;Zhao and Cao, 2011). Undoubtedly, the extensive use of the subsurface will generate interaction with existing structures above and below ground, and these interactions should be planned for (Hunt and Chapman, 2009;Hunt and Rogers, 2005).…”