Can I get cheaper car insurance with the drink driving rehabilitation course?

I got done for being over the drink drive limit in Oct 2009. Reading of 94 micrograms of alcohol per 100 millilitres of breath. I got fined £80 and £100 costs. Did this course when I was banned for 12 months. I got 3 months wiped off and 25 percent off insurance!!! What a nice Judge he was as well, very understanding that I was grassed up by a petrol station attendant and really wanted to get back on the road again. Hope this puts people's minds at rest, that you don`t get done that much.