I couldn't honestly say
I've only had toasted cheese sandwiches
I don't like fried bread myself - too greasy
But I'm a big toast fan, so maybe I just compare the two unfavourably.
Fried bread is just that. Bread (sliced, white) fried in the fat left over after frying other breakfast items. Which is why my Dad rarely has it, because they grill everything.
In fact it's probably just a treat at Christmas and Easter now as he'll use the dripping (fat from the roast). If that - since his heart problems Mum is far stricter on what he eats!
It did used to be a staple of a fried breakfast.
Even now, if I stay in a B&B I will check exactly what they mean by a Full English. I can cope with fried sausage, bacon, egg (although I'd never make them myself) but leave out the bread. And the tinned tomatoes.