I have just finished the last interview before the holidays, so the final tally of interviews in the first third of the project is:

Walking interviews - 4 completed, 1 arranged (as before)

Traditional, sedentary interviews - 1

'Double' interviews (sedentary, then walking) - 2 completed, 1 in progress, 1 to be arranged

So that's 10 people  , another 20 to find   !!!