The RVR at Southampton has remained between 175m and 225m all day so far. The RVR at BOH has fluctuated much more and has been above 400m for much of the day. Even if SOU had CAT III I don't think anything much would have got in today. I don't believe the Flybe DHC8s and Eastern Saab 2000s are CAT III equipped. Certainly the last 3 FlyBe diversions all made CAT II approaches into BOH. An Eastern Saab attempted to divert to BOH but broke off the approach when the RVR dropped as only CAT 1 equipped.