They are!! My friend and I are going to one in Southend overnight in a few weeks time, we found it last year when we went to see the Levs and stayed in it. They do the most awesome breakfast and it's just put out, and you are left to literally stuff yourself til you can't move with eggs cooked to order but all the rest of the stuff just out. For a small hotel it did a vast choice of hot things, bacon, eggs however you wanted, meat and veggie sausages, hash browns, black pud, beans, tomatoes, mushrooms, pancakes....you name it. They weren't expecting my friend who is a bottomless pit. She ate SH*Tloads. And I do mean that!!! And they still accepted our booking to come back

I have to say I had never heard of peanut allergy until I was well into my thirties....but I guess it must have been around before.
Where can you get a decent afternoon tea in London?