I hadn't realised that getting human RVR readings had become so difficult in the UK. How hard can it be to train a fireman to count lights? Er sensible answers only I'd rather not get moved to Jet Blast.
Our ops manual is the same as tireds which is pretty much a straight copy from JARs.
In this case though the airport must have had someone qualified as despite the iRVR failure they were giving an RVR of 450M. I'm still not sure what would have happened if we had insisted on making an approach, would we have ended up at the wrong end of an SRG investigation or should we now be asking the airport for our diversion costs back!
I get the feeling I might have to phone the CAA for a "definitive" answer, any suggestions who would be the person to talk to?