Thanks for the advise once again. I have a pair of Asics which are fab and also for the slight over pronators so I know I have the good footware. I mainly get them in my right shin the most, but my left has flared up and I know it is because I was trying to keep the weight off my right leg on the last run - not good at all!..
Rest it is (arghhhhh!) with lightweight cardio work (i.e. swimming, cycling etc) for 2 or 3 weeks I guess, the trouble with me is that I am sooo impatient! :)