SimonM does a great looking all-in-one fried breakfast in foil, one day I'll talk him into making me one.
Here you go Rich...
Use thick foil, with a double layer on the bottom.
On the foil place a layer of sliced potatoes (which are sacraficial if you leave it too long, but saute nicely if you get it right
), then bacon, tomatoes and mushrooms.
If you make a "nest" from the sliced mushrooms, you can then crack an egg into it, stopping it from running everywhere.
Seal the pouch and drop it on the embers - I find that between 20 & 30 mins is enough, dependant on the bed of embers...
Once cooked, our scouts can slide the contents onto a piece of bread without dropping anything...another slice of bread on taop makes the perfect breakfast sarnie
Or you could go down the griddle route...
Enjoy!
Simon