Welcome and congrats Claire, islington and rogue!
rogue first appt is basically getting a picture of you, medically speaking - any conditions which could affect you during pregnancy, any genetic conditions in yours or your partners family which could affect baby, previous pregnancies, etc etc. She will probably do the healthy eating/folic acid/staying active spiel. You'll most likely have some bloods taken, which check your blood type, iron levels, the presence of a few infectious diseases, and I believe a couple of genetic conditions. You might get your handheld notes, or they might send them on to the hospital and you'll get them after your scan. She'll want a wee sample too, so either take one or go needing a wee (not desperate - the sample pots are tiny, you only need a dribble!)
It's fairly comprehensive and v important for the mw, but not massively exciting for you tbh! The first scan is a much bigger deal imo 
As for me, I have a private early scan tomorrow afternoon and I am shitting it. Have had 2 mmc and scans are just not a fun experience for me, at all. I just need to know either way so if things have gone wrong I can deal with it asap, and if things are ok I can relax a minuscule bit. Will be 8+6. Feel sick with nerves and general nausea!