Yeah you won't normally get a general for a colonoscopy in the UK
Really? It's a mildly uncomfortable procedure and that's mainly down to the gas they use to inflate the bowel, I've had to have a few over the last couple of years and I dont even bother with any extra sedation, a GA seems massively disproportionate.
The prep isn't great for sure, Moviprep is what I've had, 2 x 1 ltr of thick sickly liquid. Though I must be getting used to it as the last time wasnt too bad lol.
Had my first one in Australia, under general. Second was in the UK, under local. General is definitely more common here.