Scores of other protesters continued to block sites including Waterloo Bridge over the River Thames and the Oxford Circus and Marble Arch intersections.
Almost 300 people have been arrested so far this week after campaigners blocked some of the capital's most iconic locations, many camping in tents on the streets.
Boulton called the climate change activist group "a load of incompetent, middle class, self-indulgent people who want to tell us how to live our lives", during the interview on Wednesday afternoon.
Protesters who have blocked London roads and bridges for more than three days say they will escalate their civil disobedience campaign if the British government doesn't step up action against climate change.
Katerina Hasapopoulos, is one of the activists arrested this week for causing damage to the Shell building.
In a post on Twitter, the protesters said: "We are happy to discuss leaving if you are happy to discuss the climate crisis with us and how we find solutions that focus on principles of fairness and justice".
"While we respect the right to peaceful protest and agree with the need to act on climate change, we don't agree that passengers should have their well-earned Easter Break holiday plans with family and friends disrupted", Heathrow said in a statement this afternoon.
"I'm using the fact that we have this privilege to peacefully protest and to be arrested respectfully by police, to stand up for our planet and future generations".
The organisation, formed by academics in Britain past year alongside off-shoots in dozens of other countries, vows an unrelenting tide of protest until governments act more forcefully over climate change.
Act now: Government must act now to halt biodiversity loss and reduce greenhouse gas emissions to net zero by 2025.
What have they been doing?
It is supported by a slew of academics, scientists and celebrities - including the former Archbishop of Canterbury Rowan Williams, British actress Emma Thompson and American actor Willem Dafoe - has claimed that more than 3,000 people will take part in Wednesday's protests.
They were among those blocking Waterloo Bridge this week, helping to place trees in pots along its length in the shadow of Britain's parliament. The latest demonstration involved several members of the group climbing subway cars on the Docklands Light Railway and gluing their hands to them, causing train delays and road closures in the Central London area for hours while authorities addressed the situation.
Recent reports say that four activists connected to the group have glued themselves together in front of Labour Party leader Jeremy Corbyn's home, demanding that the Labour Party take an even more severe stance against climate change.