Hi Ollie,
I suffered from Migraines from age 12 up until about 9 or 10 months ago.
It was ONLY when I found a chiro (a good one!!!) in conjunction with Homeopathic treatment, that my migraines stopped. I took the drug Midrid (aka Midrin) from age 17 - 35!. I used to carry it in my handbag EVERYWHERE I went.
I no longer carry it - and felt confident enough to throw the rest of the pills out - about 6 months ago!
I just said all this to help you to understand how important this can be. I didn't understand how important a good adjustment could be until I experienced it for myself. There was a place in my neck that was minorly out of alignment - and once it was back in place...no more intense migraines. I did get a couple (less severe) as my treatment progressed, but when they came, I went back to the chiro - and in my case, nothing was out of alignment, and it turned out to be the rem moving stuff out of me.
Also, my chiro is also an osteopath - so he combined the two while working on me. (I used to be highly sceptical of chiros'! My experience with them in the US was BAD! Unlucky, I guess). But, do try to find one - you won't regret it. Do it when you are able to

.
Good luck.
Lisa