If you're in London, I can highly recommend an osteopath whom I saw when my baby was breech for a couple of months quite late into the pregnancy. I also did moxibustion. I was not going to have ECV.
When my midwives checked the baby's position a few days after I'd seen the osteopath, the baby had turned.
Anecdotally, I have 2 friends who have had breech babies vaginally, one at home (with very experienced midwives, it must be said). Both were straightforward, one said it was one of her easier births!
When I was actually in labour, the midwife thought that my baby had flipped back into breech position, and pushed fairly hard for me to transfer into hospital. I refused - nothing was going to get me out of that pool! - and gave birth less than half an hour later, by which time she was head-down. We'll never know if my baby had flipped and then flipped back again, or if the midwife had mis-diagnosed her position, but if I had attempted the transfer, I'd probably have given birth in the ambulance (or on the way down my three flights of stairs!), so I'm very glad I didn't.
I was confident in my body's ability to birth babies, had had 5 quick and 'easy' previous deliveries, and had faith in my midwives' skills - tho I did also explain that I took full responsibility for staying at home, and didn't expect them to do anything other than 'keep their hands off the breech'.
As well as googling Mary Cronk, I also recommend a book by Benna Waites called Breech Birth: a very measured look at the data available for the whole spectrum of breech birthing experience.
PM for details of my osteopath if you want, and good luck! 