Sorry about the delay in answering you.
I'm up and down at the moment but to answer your question, I had the operation done at the RVI in Newcastle. I had to wait 4 weeks after the op while the swelling went down and the stitches dissolved, then I went back to the RVI to be switched on by The Parkinson's specialist Sister. After she switched me on I went for some lunch and a walkabout and went back to see her after an hour or so. She seemed happy enough, but I felt very strange and weak in the legs. I went home, which is an hour's drive from the hospital, without traffic, (2 hours in bad traffic).
I returned to the RVI after the most uncomfortable 2 weeks I had ever experienced, to see the Sister. She did some more tweaking of the DBS and sent me home to return 1 week later. Since then I have been to see her nearly every 2 weeks. She gave me a handset so I could increase the range myself, but so far, after 4 months of pain and discomfort of dystonia, or going the opposite way with dyskinesia, I feel no further forward. I know the DBS is working because my tremor comes back when it's turned off. In fact that's the only positive, my right hand tremor has gone! The physio I see, and everyone else who has knowledge of DBS say it can take up to a year to work. Let's hope they're right.