Oh, this must be the thread Lulu mentioned the other day
Lulu's right, I had a vba2c 15 months ago (at home actually) TBH I wouldn't even mention it to your GP, it's not his/her decision and they will probably be quite negative. Either way you will still be referred to the consultant to book your elective CS
If you try and persuade them to 'allow' you, you're going to be disappointed IME. The main concern with any vbac is uterine rupture and there is a commonly held belief that there is a large increase in the risk of this happening after more than 1 CS. However, there is increasing evidence that this is not the case. There was a big study published last year which showed there was no significant difference in rates of uterine rupture after 1 or more than 1 CS. You can read an abstract of it here
I would also recommend the vbac yahoo group for more support.
I had to be pretty determined to get my vba2c and the main opposition was from the registrars rather than the consultants, but I just kept stating my intention to have a vaginal delivery and of course they can't force you to have a CS against your will! You need to make your own informed decision, but I would say that for me my vbac was the most amazing, empowering, life-changing, wonderful experience of my life and I am so glad I did it!