BA employ approx. 13,000 CC. Approx. 4,900 either are not in BASSA (Cabin Crew 89) or didn't vote to strike.
The 1997 'strike' was more a sick out because few had the courage of their convictions and wouldn't actually strike when push came to shove.
The new entrant pay scales were introduced during the settlement of that dispute. This is one of the grievances BASSA used in the current ballot........they want the new entrant capped pay scales brought up to the levels of pre-1997 crew.