In the late 1970s almost the entire Forces had a pay rise of 35% in one year - Mrs T pre-the 79 election promised us the AFPRB award in full in that year. Callaghan offered to pay it over two years.
As Mrs T won, my pay went up by about 65% in six weeks, as I started getting flying pay, and had a seniority pay rise on completion of my first year. ISTR it went from £2,600 to £4,500
