The safety demonstration should give information regarding the locations of exits, but this is usually done by stating that there are two exits at the rear of the aircraft and two at the front of each cabin section.
During the demonstration, BA SOPs suggest that the Cabin crew are obliged to physically point out the nearest exits relevant to that aircraft, and to the area they are in.
The relevant safetycard must also be available to each passenger which reiterates the location of the exits relevant to that aircraft.
I however, was under the impression that the new videos BA provide are generic in a way they are relevant to all aircraft in the long haul/ long range fleet.
