Live and let fry
There's some opinions being expressed in a fairly dogmatic way here.
For what it's worth, the best Full English I've been served was in Grangemouth, about 5 minutes' walk from the Kelpies. Diplomatically, it's called neither "Full English" nor "Full Scottish".
Haggis and black pudding, back bacon (thickly sliced), decent meaty sausages, fried egg, mushrooms, and a potato scone.
Baked beans I can take or leave, tomatoes (fresh, grilled) are hardly ever cooked properly, but I do enjoy a hash brown or two, and they tend to be more consistently well-cooked than fried bread.
If I'm at a Premier Inn this'll be preceded by a bowl of fruit with yoghourt, and followed with a croissant.
I continue to be baffled by the "Full Welsh" breakfast - there doesn't seem to be any distinguishing characteristic from the English variety.