In reply to Frank the Husky:
Massage: https://www.facebook.com/pg/ianheysportsmassage/about/ . No personal experience but I've heard he's quite good.
Physio: plenty of choice! For example
- Anthony Jones in Llandudno has a good reputation with climbers, if I remember right. http://www.physiofirst.org.uk/practice/oxford-house-clinic-1.html?contact=F...
- The Physio http://www.thephysionorthwales.co.uk/ . One of their people is supposed to be very good with paddlers' shoulders...
- Conwy Physio Clinic, http://conwyphysioclinic.co.uk/ . No personal experience but they're only a couple of offices away from me so they're on my list to try if I need physio again.
There are a few others around who've been used by various friends and acquaintances but that should give you something to start with.