Yes.
The Gap contract runs until 30th June 2017. On the 1st July 2017 the Main contract starts at Stornoway.
Do pay attention Jim. The OSD for the entire fleet of RAF/RN Sea King Mk 3/3A and Mk 5 (I suspect Mk 7’s too) helicopters is scheduled by 31st March 2016, which would bring a new meaning to GAP SAR by your accounts.
Allowing for commencement of the base transitioning, the first of which is scheduled for around April 2015, I would suggest that the first of the winning bidders UK SAR platforms will start arriving in-country around December 2014.