In sci.military.naval Iain Rae twisted the electrons to say:
Assuming we had tankers at Ascention can anyone guess how long it would
take to fly down additional F3s?

Actually, assuming there's a big enough fuel store present at Wideawake,
the presence of pre-positioned tankers there probably isn't too much of a
problem (strictly IMHO). Send some tankers down there first, "strictly a
routine training deployment, no it's not provocative, next question" and
then launch some F3s afterwards.

The problem is crew rest, I'd say. The tankers should be able to take
both spare crews (for the Wideawake-Falklands leg) for themselves and
the F3s, however once your extra F3s get to Mount Pleasant there's going
to be a delay before they can start operating. Unless there are more
than 4 Tornado crews down there already or you're going to send the
tankers all the way to Falklands as well ...
--
These opinions might not even be mine ...
Let alone connected with my employer ...