The strange thing is that anyone familiar with the terminal would wonder why this infill wasn't done as part of the 18m application as the terminal has an odd shape from the front and side. In fact number 2 on the plans was meant to have been done as part of the 18m build but was cut out late in the day to save money. Now they face extra cost and disruption.
Note the apron in front of the the multi story that isn't highlighted in blue. Clearly outside the DCO proposal