As an update have kept up with the taping, using the offload technique linked above, left foot today is 100% no issues 
However right foot... not great.
The tightness in my calf muscles seems to have subsided, and pain on walking isn't really noticable, but any movement loading the tendon is causing pain at my heel. I've also noticed my heel looks a bit yellow, like its bruised, so don't know if thats a symtom or cause...
I've checked and doing the wall test my left toe is happily 10cm from wall with my knee touching, right cant get past 6-7cm so I believe that is tight. Any tips on lossening it up?
I can do calf drops and raises, normal straight leg calf stretch is fine, calf stretch with toes raised (on step) is fine, but as soo as I bend my knee and try the stretch it really hurts.
Can anyone offer any more advice - still resting, did a very short flat bike ride just to get the muscles warm this lunchtime and have stretched as much as I can, will retape soon and hope all well for monday i suppose