I went to the British Hernia Centre, and had surgery with Martin Kurzer
http://martinkurzer.co.uk/
Fantastic surgeon, definitely recommend. local aneasthetic so you can literally walk out after the op, and he encourages you to do whatever you can as long as no pain. Open surgery tension free mesh repair although leaves a 8-10cm scar apparently the mesh can be placed far better than the tools used in keyhole.
I left it 6 weeks before returning to the bike, but did an absolute ton of walking from day 2. I’d try and get in 2-4 miles a day, gets blood flow to the area, speeds up healing, and helps the area all mesh together again. He did advise against jogging initially as too high impact.
painkillers I dropped the codeine and diclofenic, and switched to ibuprofen and paracetamol, with lots of prunes 😀