Thanks everyone for your messages (well, most of you anyway!)
Sorry, I wasn't clear - our cleaners have never had keys, no one has a key apart from my husband, myself and nanny and Banham are quite reliable and impossible to copy (or so I've been told!) Previous nanny left her key and I'm pretty sure she couldn't have copied it.
Lady downstairs sees everything and everyone and the cleaner always has a backpack with her - but everything taken would fit inside one backpack/tote bag.
I hate to think it is our cleaner but I really don't believe it is our nanny as she's been very honest in the past regarding petty cash, etc.
Well, Police forensics came and were here for about an hour - dusted for prints but only got smudges on jewellery case and watch box and of course cleaner's prints expected there - would have been a shock to get nanny's prints there but they weren't. I was recommended to get CCTV in the house and on the front door, so we're looking into some kits, I'm surprised they're so cheap!
They spent a lot of time looking at windows, etc. and can't see any signs of forced entry. So either person had a key or was let in.
I wish I hadn't said I'm disorganised - I meant that in the sense that I don't LOCK UP every single thing I own when I leave the house. I don't leave cash or valuables around. I have an acrylic storage container that holds a mascara, eyeliner and 4 lipsticks on my dresser, the rest of my make up is in a drawer of the dresser. But do people really lock up their make up?
We do leave our MacBooks out of safe as mine actually doesn't fit - do we need to install a bigger safe to get 15" macbooks in?
I appreciate the logic of locking bedroom and cleaner doesn't enter this room, then we don't have to worry, but part of the joy of having the cleaner is that she cleans our family bathroom and changes our bedlinen - which I would find a bit of a faff doing on the weekend when I'd much rather be spending time with my toddler and nap time with my husband.
But I suppose something has to give!
I'm trying to get in contact with the manager of the cleaning agency but they're not keen on returning my calls, hmmm.
I have no cleaner now so we'll see how it goes...