You can find the band of a property using the address quite easily. Can you find any other properties similar to yours in the same area that are Band A? Ignore any Bs or C's for obvious reasons.
Yes I've done that and the vast majority (around 90%) are the same band with the odd random exception for reasons unknown.
I was asked on the phone to give examples like this but I don't understand the point of the comparison -- the other houses could be in the wrong band. If my house and others like it were selling for band A prices in 1991 then to me, they should be reclassified. The only evidence they should take into account is their actual 'proven' value from house sale data.