Re: LHR - Florida Virgin
Gatwicknose,
I gave the official version of the difference between the VS LHR and LGW 744 layouts in an earlier post (not that I work for VS!) I think you will find that the seat pitch in Economy is the same whether you fly on either fleet (although as I mentioned there are more Economy seats on the LGW aeroplanes).
If you are referring to the Italian language placards in these aeroplanes, I believe this is because the 5 LGW-based 744's were built for Alitalia, who cancelled their order quite late on making them available for SRB, who wanted to put his classic's out to pasture (or desert, actually).