The site is located adjacent to Primrose Hill Park and the Barrow Hill Reservoir. It is approximately 80m long x 50m wide and slopes steeply away from the north western corner. There is a 10m difference in level from the northwest to the southeast corner of the site. There are 3no. existing buildings on the site that will need to be demolished prior to commencement of the new development. The development is highly constrained by existing Thames Water assets. In addition there is a requirement to maintain two access routes across the site, along the western edge to the reservoir, and along the eastern edge to an abstraction borehole. A series of construction details were developed in conjunction with Thames Water with respect to the agreed Thames Water parameters.