In message , at 12:58:47 on
Tue, 11 Oct 2011, Bruce remarked:
What they can't do is *start building* until 2019. I originally thought
they couldn't apply for planning permission until 2019, but it's not
even that.

That is what I thought too. I researched it in some detail in the
1990s as I lived in an area of Sussex that already had quite a lot of
aircraft noise and would have had more if the changes had gone ahead.

My information is from 2005, so post-dates your research. Maybe 2019 was
redefined, but it's currently the limit on building work, not planning.
--
Roland Perry