Work No.1 A barrier across the mouth of the New Cut on the river Orwell, with a moveable gate providing a channel width when open of 20 metres together with piers, a stilling basin, piling, scour protection, flood defence walls linking to other flood defences and other associated structures.

Work No.2 A building for control and associated purposes in relation to the barrier.

Work No.3 A new underground electricity cable and conduit being a replacement for part of an existing 132 KV cable between TM1686343408 and TM1705243383.