It's not an informal occasion, with the children popping their heads around the corner saying, 'mum, can I join you?' the Queen will send her page with a message to invite them.

Nobody else is present, no notes are taken, no Prime Minister has ever revealed what goes on.

She likes that. She's not very keen on politicians.

The rule is that if anybody is in the garden, apart from the gardeners, they must leave. Nobody is allowed to talk to her unless she speaks first. She likes to be left on her own because it's her thinking time.

They're what we call 'bio-equivalents' -- they have the same active ingredient in the same amount as brand-name versions. They offer the same delivery, too.

That's OK, but -- especially if you're getting them from a mail-order service -- it could be a mix-up, too. So if you get a different-colored medication, don't hesitate to check with a pharmacist before you take it. These drugs aren't Pez candy -- take them seriously, and if you have questions, ask.