they've just changed systems here so it's now a central phone line for the midwife, like where you are. GP gave me the number and I called and was given a booking in appointment (8ish weeks) and first scan date (13ish weeks) right then on the phone.
you'll need to keep phoning back as if you leave it too late they'll not be able to give you an appointment right away, so for example if women usually call by 6 weeks and they want to book them in for 8, they may just book the whole next two weeks, so if you don't call until you're 10 weeks you won't get an appointment until you're 12 weeks. just as an example. always best to phone asap just to make sure they can get you in when they think is appropriate. they'll usually want you in between 8 and 10 weeks.