Hi Anjac
the uk has THREE specialist GCS surgeons who do NOTHING else but GRS.
They are Mr Philip Thomas FRCS, Mr James Bellringer FRCS, and Ms Tina Rashid FRCS
They are all good surgeons - and Bellringer & Thomas in particular have a lot of experience of revision work.
In terms of nerves you are getting confused between the central nervous system (spinal column & brain) which cannot regenerate - and the peripheral nervous system (everything from the spinal root ganglion onwards) which CAN and under right circumstances almost always DOES regenerate.
The right circumstances by the way means a decent diet (preferably rich in folate and B12), good wound care and healing, and good general health. Under those circumstances peripheral nerves do recover although it takes time which is why often people are anorgasmic for some while after surgery.
So how did he do it? Well he found some nerve tissue in the surplus remaining errectile tissue and he carfully fashioned a bud out of it using available labial skin to form a hood. he did warn me that it might not work - but it did! and rather well too! Like I say its not perfect but its a whole lot better than the nothing I had had for the 25 years before.
I think our Uk surgeons get an undeserved bad rap. They may not enjoy the rockstar status of the Thai boys, but they know their stuff and personally I've always found they are good. Then again as I am perhaps biased, after all I'm a uk medical student and I've worked in some of the theatres that they operate in...