I would have thought that 764 NAS would be a more appropriate numberplate.
With regard to the squadron's base, my understanding is that when FRADU re-equipped with Hawks it moved to Culdrose as the range of the Hawk is less than the Hunter with four 100-gallon tanks apparently. T.1s are not plumbed to carry auxiliary tanks. An article in the aviation press (sorry, can't remember which comic) on Hawker Hunter Aviation's ops at Yeovilton last year would suggest that when the T.1 comes to an end, if HHA receive the contract for FOST support they will likely more than likely use Yeovilton as a base.