You got yours yet?
You'll get ½ price MOTs (at participating dealers)
And a discount of 15% for vehicles 2-3 yrs old, 20% for vehicles 4-7 yrs old, and 25% for vehicles 8 yrs and older on Vauxhall parts and labour charges.
It saved myself £53 yesterday when I had my car serviced & MOT'd. I didn't get the ½ price MOT offer unfortunately.