TCAS and Rivet joint,very good points,but its been obvious for some time the the owners of Saouthampton Airport have no intention of airside development.Simply upgrading rw20 approach lights to full cat 1 ILS specification i e 650 rvr ,would have avoided a lot of diversions to Bournemouth over the last few years,the cost cannot be that much!.Due to the touchdown and approach obstacles I cannot see cat 2 ILS being viable. There is still no decisions on 02 approach aids,with VOR dme shortly to run out!.I'm afraid Southampton is seriously lacking in approach aids for a airport of its status,and to illustrate this, there radar is one of the oldest of regional airports kits!.