The BA -200s were sold to EAAC shortly after '911'. Most of them had eight double lane slides on the main deck and two single lane slides on the upper deck. The slides at doors 3L/R were removed to save weight as they were not required when the capacity of the aircraft was reduced.
The -400 has twelve double lane slides, ten on the main deck and two on the upper deck. Nothing has changed since the day that they were delivered.
Perhaps one of our EAAC PPRuNers can say what the current state of the aircraft is?
Airclues