I would like to know how many demerit points my driving licence has, that is, how many points I have lost

Well, it is highly likely that the company will name him as the driver .

The fate of his license depends where you are . Here in NSW Australia, he would lose his license for 3 months.

I realise your sympathies there, but running red lights is really dangerous, and to innocent persons as well.

Log into the site ..of that issuing license authority

the site will have a menu to check demerit points

fixya doesnt have access to dmv files or fines --need to go to a police station ,license issue location ,court,or your insurance carrier

you log into your road authorities web site
in one of the menu s
will have that option to see the points left
use you license number as a log in

tells you how many points left

get a solicitor to plead your case in court
take what ever proof you have that the speed registered was not accurate
from most court cases you will probably find that without solid proof that the infringement didn't occur you will still be out of pocket the cost plus the solicitors costs
I know it stinks but that that is the way it is
speed limits are well signed and it your responsibility to stay within those limits

contact your DMV they can tell you

What Country? What State?

Go to your local licence issuing office and ask for a drivers abstract. It's about $12. At the bottom of the page it should say how many points you have. A good driver will have 0.