Just updating this thread with a point of interest.
I had an OML placed on my initial Class 1 due to a severe head injury in 2005. I thought this would be a barrier to a commercial year so decided against the modular route.
This year I applied for the BAFPP and was successful. After receiving news of my success I was slightly down beat as I thought the OML would rule me out. However I was surprised to find that BA Health Services do not view an OML as a barrier to cadet entry provided you can go down the normal CPL ME/IR training route and have unrestricted Class 2 privileges.
So there you have it, perhaps some hope for those with an OML on their initial Class 1.