Thanks for the thoughts Meglet but I want to avoid a section at all costs.
I'm feeling a bit better and had a long chat with my IM this afternoon. From what I can see, she is only concerned because labour has started and I am approaching 42 weeks are there is an actual small increased risk that the placenta does not function as well at 42 weeks than at 40 weeks.
The hospital/MHS is concerned as I have all these other risk factors (hypertension, previous section, overweight, possible pre-eclampsia).
For me, I dealt with the other 'NHS' risks when i got pregnant and whilst did not dismiss them, nothing has changed for me and the risks of these do not increase just because I am overdue. therefore, they are not new risks and so do not concern me (well, they do obviously but I am comfortable with them and, for example, my bp is absolutely fine at home. It was 116/80 today). So I would not change my plans based on these perceived risks.
The 'new' risk if you like is that I am overdue but labour has stalled. My IM has said if I was 2 weeks earlier and this happened, she would not be concerned at all. It's only because the placenta may be ageing that she would like extra scans.
She has given me 2 sweeps today and whilst the cervix is no more dilated (3cm) it is now fully thinned, so I'm still keeping everything crossed that labour kicks off again tonight.,
Otherwise, we will go to hospital tomorrow and have some monitoring. I have already told her that I will not consent to induction or c-section unless there is a clear medical emergency to do so. If all is well (and there is nothing to indicate it isn't), I expect to come home and wait it out. Labour has to restart eventually!
My biggest other concern now is that poor C has been apart from me since Saturday morning and may have to stay with nana a few more days. She adores nana but I am worried she is missing me and DP dreadfully.