"If someone is begging for pain relief then they should be admitted and treated for the pain they are suffering, however far along in their labour they are.
Yes, this is the humane response.
But what happens if it becomes the norm - that women are told that they'll be admitted in early labour if this is what they want? Labour wards would end up having to turn away women in active labour. Some hospitals in London are closing their doors to new admittances many times a year already - a 1000 times last year apparently, because there are so many babies being born. NHS hospitals don't have the capacity to offer care to women in early labour on the basis of current funding. If they were offered much more funding it'd be difficult for them to argue that this is how it should be spent, when there is a severe crisis in postnatal care (that's just one area where maternity care is really struggling to meet even the most basic needs).
"ELCS is clearly the cheapest option if you consider the long term costs of a birth with serious complications"
I'm not sure you are right on this, but I can't find the document from the RCOG which backs up my view. Pregnancies following a c/s are more likely to result in placental implantation problems and uterine rupture - both things with high rates of fetal compromise and death.
"I assume that that isn't something you would want to see Lemis. But in the same way, I don't want to see options for effective and safe pain relief withdrawn from "low risk" women."
Happily, there are no plans to do this.
Plans are afoot, and underway though, to close birth centres and cancel homebirth services to save money.