Why are some of my appointments with my GP and others with the midwife?

This is rare now, most antenatal appointments are with the midwife, occasionally a GP will do an antenatal consultation.

The way in which antenatal appointments are arranged vary slightly from area to area. If you are having a straightforward pregnancy, your care would usually be shared between your GP and midwife or in some areas, just your midwife. If there were any complications, you would have one or more appointments with a consultant at your local maternity hospital. ¹

If you feel more comfortable with your midwife, you should be able to arrange to have the majority of your appointments with her. On the other hand, if you prefer to see your GP, you may be able to have more appointments with her/him. It is important that you feel able to ask any questions or discuss any issues you may have, even if they are of a personal or sensitive nature.²

¹ Matthews Mathai 2002 “Patterns of routine antenatal care for low risk pregnancy” WHO Reproductive Health Library.
² Nice guidelines for antenatal care for healthy pregnant women: http://www.nice.org.uk/nicemedia/pdf/CG6_ANTENATAL_CARE_A5.pdf