I have had all of those things for my old film SLR, and am definitely not a "pro" - just someone who enjoys taking transport-related photos.
That's fine. If you enjoy taking transport related photographs, there really is nothing stopping you from obtaining the necessary permission:
BAA Heathrow: FAQs: Filming, photography and recording
I am also informed that taking photographs of celebrities at the airport or on an aeroplane without their consent is expressly forbidden and taking photographs of any airline or airport staff is also prohibited. The use of a camera or mobile phone in the Immigration or Baggage Hall is unlawful and both police and UK Border staff have powers to confiscate cameras or mobile phones being used in those areas.