
It turns out that I had four herniated discs, which when I went in for the op it was only two, but while I was on the table the surgeon decided to do the other two suspect discs as well.
That was a couple of years ago and due to the two year back log on the NHS I had no real choice but to pay private. That said, 100% money well spent, without doubt. If you have sciatica to the point that its cutting the circulation of to your foot, which mine was, then the longer you leave it, the more irreversible it will do.