I had an anterior placenta both times.
With DS1 it was around 23-24 weeks before I felt movements, but it was much earlier with DS2, around 17-18 weeks.

I don't know whether this was because it was second time around and I just knew what to expect to feel, or whether it wasn't right at the front or what the story was butnit was much earlier and I also felt a lit more movements throughout mympg Than I did with ds1.