Wings unfold prior to the fast taxi run down the runway. Note the Mod.1736 redesigned (straight) wingtips, introduced after the fatal crash of XV345 on the Nellis Ranges in February 1980, caused by fatigue due to high wing load.
XX900 was with 237 OCU at Lossiemouth from October 1990 until disbandment a year later. '900' spent her last operational days with 12 and finally 208 Squadron at Lossie.