There are a number of make-your-own-family-tree sites floating around. I happen to like TribalPages myself.
First off, it's a large search site, with a database of either 50 million or 25 million names (the site gives different numbers on different pages). Whatever the right number, though, it's a biggie.
The Queen's family tree is a large one.
Find your tribe as well.
Be sure to use the TribalPages search tool and search on your family name, to see what turns up. With luck, you may not only uncover some family history, but you may unearth an old portrait or two out of the more than 1.5 million photos at the site.
There's more here than just name searching, including the opportunity to build your own family tree website, free of charge. These are nicely done, interactive pages. Their sample page on the British Royal Family Tree gives you a good idea of the features available.
This is a site worth exploring.
Don't forget to also check for your family history at Ancestry.com and NewspaperArchive. These are subscription databases, but they are among the most powerful research tools available for looking into family roots.