>>>BA also has a couple of 777 that they use within Europe and they are also 10 abreast.<<<
The high density BA 777s are actually used on mainly Caribbean routes to ANU,CUN,GND,SLU,MBJ,KIN,TAB, in the BA45xx series of flights. They are configured 24J and the rest of the a/c as Y at 3-4-3 apart from about four rows at the rear which are 3-3-3. They are operated by BA pilots, but the cabin crew are from some other company - can't think of the name at the moment. They are the cause of the majority of BA complaints about seating capacity, and the arrangement is due to finish at the end of the summer. MBJ and KIN finish, I think, at the end of next month.
Daily BGI flights are served by a normal 772 with F,J,Y seats, with Y being at 3-3-3, and with all BA crew.
Per Ardua ad Astra! ........ Honi Soit Qui Mal y Pense!