Of course paying 30% is hard, that's well beyond the point at which most companies have pulled the plug on their pension schemes. However the pension regulator was warning that companies couldn't pay dividends and then claim that they couldn't afford to meet their pension obligations. So far there is nothing to suggest that NATS won't be able to pay the pension so it's entitled to pay the dividend.
There is a step between being hard to pay the pension and impossible to pay. Of course NATS management doesn't want to pay 30% and will moan about it at every opportunity but I hope there is a big gap between when they start moaning and when they stop paying because that latter point is not good for any of us.