Hi cazscot,
I am sure that you have a plethora of drugs in the cupboard to deal with your migs, but following on from Caroline mentioning Syndol I thought that it might be worth passing on some of my experience with cures for migraines.
Syndol knocks me out as well but they do work. I tend to take them at night and they have the double bonus of helping me sleep.
I also use Paramol which is available over the counter, but is even stronger and shouldn't be taken for more than 3 days.
High doses of aspirin can work, but they play havoc with my stomach so be careful taking them.
You can get a 4head stick which doesn't get rid of them but helps me to cope with the symptoms.
Strangely enough, a strong cup of coffee or espresso also works for me as I don't usually drink caffeine.
Other than that, you should go to the docs and work your way through the many triptans that are available. For those who don't know, they are a type of drug designed specifically for migraines. There are about 6 different makes with a handful of application types. As to which one is best for you, unfortunately it is a matter of trial and error. I have settled with Rizatriptan which is the 4th that I tried.
Check out my migraine blog. I haven't updated it for a while but it has a few stories about my experience with the many types of cures and preventatives that I have tried.
http://anothermigraine.blogspot.com/