My bad, both comparison asked me my reading.Some comparison sites will just accept a Drink drive code rather than wanting the specifics. It may be however when you are directed to the actual insurers website, they might ask the details. Apart from your charge sheet, you should have had a letter from the court after your conviction. It will detail what you were charged with and usually has the details of the offence including reading if relevant.
I have had a letter birth from court and DVLA l.
But I have shredded all, I did not know that I need them again.
Now, I know I should have kept them or at least a copy.