Luton airport is planning to build a new terminal building, double the number of flights and expand the airport from 18 million passengers per annum (mppa) to 32 mppa. This is the second ’statutory’ consultation, closing 16 December 2019.
You can read about the plans here: https://futureluton.llal.org.uk/
And for Extinction Rebellion’s guide on how to protest against the expansion, click here