The Vis cct is 1000' QFE, SPC 1500' QFE, RTC 2000' QFE, Procedure Pattern height (NDB, TAC) 2500' QFE. We try our best using the premise that if you are VFR and you are not visual with IFR traffic then we will separate you. We very rarely have problems and our procedures appear to work very well receiving not many complaints at all. As stated before if you don't feel comfortable with what we are doing then go west with Bristol or east with Brize.