Hi guiydo, thanks for the reply. I have been to see the physio and this sounds similar to what they have suggested - they thought I would need to do stretches and then slowly build up with some strengthening excercises. She said she can feel thickening of the calf muscle where it was originally hurt and thinks that the calf raises might have caused the pain in both outer calves.

She started me off with some new stretches which seemed to be going okay but then got me doing some plantar flexion with an elastic band and since I've been doing that for a couple of days, the pain has started to return! So I think I'm going to need to go back for another set of sessions and start from the beginning again. Hopefully, this time I will get a better outcome. But, I am not hopeful