Yes, merlot a bit like skiing instructors "ben ze knees" . Bending the knees at the first signs of fainting should enable the faintee to crumple sideways in an unobtrusive manner.
Of course, those who are prone to fainting should wear protective equipment, crash helmets, elbow and knee pads etc. But would look awful with the current outfits.
So, moving forward it leaves 2 options, namely:
Stringent tests to assess the propensity to fainting, this could involve some sort of shock test, how do they react to Prince Philip suddenly shouting "Oh look, there's that midget Bercow!" Or perhaps "Liz, let's hope there's no Johnny Foreigner types here today!"
Or:
Total re-design of outfits, perhaps in the traditional colours (red and gold, although the Queens horse racing colours include a rather jaunty purple) but to incorporate a slightly more modern twist. Perhaps they could be on roller blades?
(The pages that is, not the Royals, she'd never manage them if her glasses were varifocals)