You need to own a landing slot, be a V.V.I.P., or declare an emergency to be able to land at Heathrow.
Rubbish old boy, as HEATHROW DIRECTOR says its not a problem.
I have been there many times in the Cessna 310, single crew, both in the dead of night and during the day.
I have sometimes been stuck trying to get out in busy times of the day, getting a runway slot can be a long process, but HEATHROW DIRECTOR and the boys normally squeeze you in, stick you on a radar heading and pass you on to london.
The landing and handling fees are in line with any other large airports, but not as much as I paid in SOU one night.....£1500!! for 20 mins on the ground
FL245