I'm still fairly new to SW, but there is a section on 'eating out' which you may find useful. I'm not sure if they do a fresh fruit salad? I'd steer clear of the cooked breakfast as it isn't likely to be grilled or cooked in frylight... Is it something you have to go to? Could you maybe eat at home and just have coffee when you get there?
Hey - i used to work in a Wetherspoons, they do wholegrain bread so sounds like a good option! (it is quite thickly sliced though so be aware!)
I agree to sta away from pretty much anything else brekkie wise - the sausages are cooked in the deep fat fryer, as are the hash browns. Bacon is on a grill with no oil, so could be an option maybe? (i'm a vegetarian so not much help on that front, sorry!)...the other thing i'd say to watch out for is the Quorn Sausages there - they're also deep fat fried.
Hope that's of some use! Wetherspoons is one thing i do know about, i'm just about useless knowing how things are cooked elsewhere! x