Hi Dueling. My experience (in Cardiff too) is that they will tailor it to you and your baby's needs. Particularly for a first time mum. With my first, we had serious problems maintaining weight and so the MW came most days for over a week, then handed over to the HV. With my second, she came once, asked if I was happy to go it alone (I was) and that was it. Both times, the amount of contact was just right. Just make sure you ask for any support you'll need and I'm sure you'll get it.
im in south wales and my midwives came everyday for 2 weeks and then every other until 4 weeks. Obviously you can call them at any time and they will come straight out to you if you need any help. Good luck
Mine didn't see me at all after the baby was born. Again he was in hospital so that may be why. I was told to have some postnatal checks back in the ward. They asked are you alright. I said yes, then I left. Complete waste of time