A good place to check if you want advice on the legal side of things is
www.pepipoo.com - register for the forums there (free) and see what they say. The only other advice I can offer is that telling a court that you wern't paying due attention because you had a migraine isn't likely to go down too well. If you feel you weren't paying enough attention it could be argued that you shouldn't have been driving at all, at least that's how I suspect the magistrates might see it. As to penalties... well, if you're worried about a driving ban I presume you've only had your full licence for less than two years. If it's more than two years you probably won't get a ban unless you were going really fast, otherwise expect 3 points and a £60 fine for each. If you are still 'probationary' then you're going to have to fight one or both if you want to stay on the road unless you are able to sell exceptional hardship to the magistrates. That's not something I'd want to rely on given recent stories in the media (unless you're a politician or a police officer

). And if I was thinking of fighting a speeding ticket
Pepipoo is the first place I'd go.