About the English Breakfast.... It's usually more of a Saturday thing if you have it at home [work and school during the week means people are getting up at different times and no-one can really be bothered to cook it], and on Sundays we have Sunday Roasts [Lump of meat, yorkshire puddings, roast potatoes and usually another three veg]. And English Breakfast is made up of sausages, bacon, fried or scrambled eggs, toast, hash browns, baked beans, mushrooms and black pudding. ^^
just throwing my two cents in as a token English....
Other 'token' English food would be: fish and chips [but only from a proper chippie!], scones with cream and jam [eaten with a cup of tea 
].. The two meals up there haha. 
Also, hotels!
http://www.visitlondon.com/where-to-stay/hotel/family-friendly-hotels
This site includes a list of things to do while in London, as well as places to stay that cater to families 
I do suggest The London Dungeons, the Waxworks, and Camden Market, but if you go to the market you have to promise to keep all your money somewhere safe, your phones in your bras or somewhere safe, same with keys... Pick pockets are very active there, and they're very good at what they do. I don't want your holiday being ruined because someone stole something while you were shopping :')
Also, go to the zoo! 
It's amazing there.
Having a birthday holiday to the Netherlands <3 So excited!! <3
Karube