OA - Did we move Australia as well?
I thought it was Gan that we moved from some 2 miles South of the Equator to 2 miles North (or thereabouts or even the other way round). All I can remember about it was that our Nav - Frank ***** - spent about 2 weeks of one SAR detachment wandering around the island with the sextant and taking lots of readings before submitting the change of position to the Admiralty, who eventually sent Hecate out to check that he was right.
Incidentally, the original position was plotted by the RN for the establishment of 'Port T' - a secret refuelling and operating base for the navy during WWII. Good job they didn't run aground then, although even the Germans were able to find it when I believe a U Boat torpedoed one of the Tankers inside the Atoll!