Scotland have not played since their series victory in Argentina in June and Robinson took the lay-off into account as he gathered his squad together for a three-day training camp in St Andrews this week.
The prime minister has been critical of the way protesters set up camp outside St Paul's - which temporarily closed, cancelling Sunday services for the first time since the Blitz in 1941, saying that the camp posed a health and safety risk, and has seen several high profile resignations over the camp.