Thanks for the reply Andy, appreciated. We're actually talking to Ordnance Survey atm so hopefully we can work something out. Building height data for the UK (t

Thanks for the reply Andy, appreciated. We're actually talking to Ordnance Survey atm so hopefully we can work something out. Building height data for the UK (that's available outside higher education) is a pain to get hold of so I'm hoping we can work something out. I'll definitely look into the CityGML stuff, it sounds great. LIDAR is certainly something we're keen to explore further. If anything, it'll get us a much more accurate estimation of height, at least better than an educated guess or via SRTM (which is way to low detail and can't be relied on for buildings). The CityEngine stuff is amazing. I've not actually played with it myself yet but I've been having a good look at it during my research. Would be cool to have a go on it at some point.