[eeyore]

The inability to drive is going to be the biggest stumbling block i'm afraid - even most project officer and ranger jobs require you to be able to either drive the works vehicle or have your own.

and the DDA isnt going to help - it requires that employers make "reasonable adjustments" to allow disabled people to take employment - for example by having a works vehicle adapted to hand controls for a wheelchair user - there are very few reasonable adjustments that can be made to accomodate epilepsy unfortunately - the provision of a driver would not be considered "reasonable" and most work cannot be done via taxi due to the nature of the driving (often off road, transporting tools or events materials, emptying bins, patrolling etc)

I'm not saying that you should give up , but IMO you need to tailor your application to only those jobs where driving is not required asnd that isnt likely to be project officer and rangers. - I would suspect your most likely avenue is either as an education officer on a nature reserve / feild studies kind of site where everything is within walking distance, something like an arent birds brilliant officer at a static site, or an ecological field where work is done in pairs such as bat survey or radio tracking etc. Such jobs are quite thin on the ground so it isnt going to be easy but i wish you luck in any case