Sara, I don't know if the meter was checked in the house I'm in now, because it was here when we moved in, but on Friday last, my brother had a meter fitted at his flat. I was there. The fitter told my brother someone would pay a visit in 6 to 8 weeks time, to check that the meter was working correctly.
Which Water Authority are you with?
My bro's meter was fitted inside, but if yours is outside, it's possible somebody came and checked it and you wouldn't necessarily know.