Permission from the Greater London Authority (GLA), Metropolitan Police and National Air Traffic Service (NATS) was required for the balloon to be flown over Parliament Square, the space above which is considered restricted airspace. Permission was granted, allowing it to be flown, while tethered, up to high, for up to two hours. Both the GLA's 'City Operations' team and NATS stressed that the nature of the protest did not play a part on their decisions.
