Surface blockhouse with purpose built administration block alongside. The Abbey Veterinary Centre now uses the front part of the blockhouse and windows have been installed at the front. It is clad in brick, similar to Winchester. A new 2-storey office block (Observer House) has been built at the rear butting on to the blockhouse, it is uncertain if there is access from this building through the emergency exit of the blockhouse. Internally the building has been split into two with walls built across the main corridor beyond the officer’s room and the access from the control room to the BT equipment room has been blocked. The balcony has been floored over. All the plant has been stripped out, as have the original toilets. There is a cabinet in the vet’s waiting room containing ROC memorabilia including photographs, badges, ROC crest, radiation detectors etc.