Councillors had already given the developmentoutline planning permission in 2010, but had to consider a scaled down version when the academy's main sponsor - Durham University - pulled out.
Those defences - a flood bund, or mound - had been put in place as part of original outline planning permission granted to the Welsh Development Agency (WDA) by Denbighshire council.
During the six-month period that the figures cover, the society opened a store in Don Street in St Helier and obtained outline planning permission for the Leale's Yard development in Guernsey.