Well Der, Im one of those Old Linguistic Tarts as your refer to despite the fact that Im 27....you ignorant fart!
Anyway, The Old Club World flatbed requires the Adaptor which can be purchased from the dutyfree. They are supplied free of charge to First passengers.
The New Club World seat does not require it and has a standard US plug at the foot of the seat. The adapter you buy can be used universally however I know that it is probably becoming outdated as USB plug adapters seem to be coming the norm, something I am sure the cabins of the new aircraft will feature from next year.
I believe BA are planning on introducing the adapters on a rent basis from next year when the 767 and a handful of the 777s will be the only aircraft remaining with the old system.
And just to ad, they have been selling these adapters for YEARS on BA, is it a slow mud slinging week or something? Christ, the lengths people will go to just to have a whinge about BA!!!