Strange how our money experts seem unable to work out the average RPI and pay rise over the past 15 years to give a straight answer...
Actually it's bloody hard because I've tried it. As soon as you go back past 6 years you run into a whole series of staggered payrises and non pensionable add ons which make it almost impossible to calculate. It's also questionable whether or not you should include wage rises pre PPP as representative of future settlements although my figures suggest they were generally worse than since.
For ATCE, STAR, MSG and in most years ATSA grades I think the most recent figures going back are RPI + 0.25, RPI, 2.8% + £500 non pensionable (representative RPI for that year was 3.4%), RPI + 0.6, RPI + 0.6