Why no ladybirds?

I just  put a ladybird in the garden as it was crawling along the coffee table 

throw all your chemicals away and go organic, add wildlife friendly spots to your allotment and you will soon see a return to balance as well as being able to produce excellent crops and the ladybirds will return as if from nowhere.

I would agree, but I am almost entirely organic, have piles of rotting wood in corners of the garden, live next to a slow running stream etc.  Still no ladybirds.  For 5 years!  Maybe they just dont like me 

There was a lovely one on a cornflower while I was watering - it's the first one I've seen in the garden all summer

There's loads of ladybirds up here on our allotment in Manchester...maybe they like the rain! 

We have loads of ladybirds though a couple of weeks ago was a bit upset to notice a number of dead ones 
At one point I could count a ladybird on every carrot plant 
And they're all proper ladybirds too - not those nasty big bitey cannibalistic Harlequin things with too many spots - urgh had an infestation of those in my house couple of years back - they kept biting the cat who is now terrified of ladybirds.....
Last year I even found a couple of yellow ladybirds hiding in the plants - haven't seen any of them for years, certainly not since I lived in the East Midlands!
We also have loads of newts - nice because they've prevented the council from digging up some of the allotments to put a new water main in (for an estate that hasn't been built yet)