Having an ambitious mindset and always striving for the best in their work is important at Heathrow Airport, as seen in their core value of improving every day. This mindset has helped them grow from a small, private airport in 1930 to one of the largest airports in the world today. Ensure your interviewer is clued into your ability to think outside the box and be creative by talking about a time when your critical and unique thinking helped provide great results or create a new process. Reiterate that you will continue this same mindset in the work you will undertake at Heathrow Airport.