Just to join in on the prevalent "apples-to-oranges" comparisons that are going on in this thread of late, the Harrier never did a VL at any air shows. It did a STO to begin the show, burnt off some gas by way of a few minutes of conventional manoeuvres, a quick RVL 'bounce' or two, and then some hovering which culminated in a final RVL. Why? So the jet didn't trash the asphalt.
F-35B shouldn't be any different. Yes it kicks out more thrust but don't believe all the hyperbole being spread. It won't cause the earth to combust, dislodge planets from orbit and certainly won't cause sea levels to rise anywhere near as much as the hot air coming from Sweetman will.
I think it's great that we'll see JSF fly in UK skies. I am, however, standing by for the inevitable, "it can't do a Super Cobra so it can't be any good"-type commentary that will follow its debut.