(a) An operator shall ensure that the landing mass of the aeroplane determined in accordance with OPS 1.475(a) for the estimated time of landing at the destination aerodrome and at any alternate aerodrome allows a full stop landing from 50 ft above the threshold:
1. For turbo-jet powered aeroplanes, within 60 % of the landing distance available; or
I'm not an EU chappie (don't even know where that is, actually

) but I would have thought this paragraph says it all, making no distinction between Dispatch or Inflight.
Under our rules, landing at a greater weight by not considering factors (once airborne) is not on unless an emergency exists. The way I read the above rule (1.515 a1), it's the same; it requires full factors when you touch down.