Yep that's what I thought Trish, 40weeks from the first day of your last period, however they may adjust this due date depending on the results of scans.

I'll catch up in my lunchbreak girls, on hols Thu + Fri, then off for 2wks in 2wks, so trying to catch up on work b4 I go, naughty me shouldn't be checking BB in work hrs :-)