that is the
PR spin I have been hearing for years. Maybe I am completely stupid and have got it all wrong
Oh come we know you are neither stupid or gulible enough to take
PR soundbites at face value - everyone knows the term "full" in this context is not an absolute, it is a relative - Air Transport in the UK is growing by around 6%, Heathrow is only managing 1-2% - so it is "full" in the sense that it can't keep pace with market growth any more. The Norwegian case you quote is merely one example of other airports taking up the 4-5% diiferential which would be at Heathrow if it had the option.
With a few tweaks here and there the wit of man is never beyond wringing out the odd extra slot or increment of capacity every year - a percentage of which has to go first to new entrants under slot allocation rules thus allowing in the occasional (low frequency) Vietnam's and Garuda's . Failing that it is still possible to buy your way in to Heathrow under slot trading rules if you have the cash.