Are private jets allowed to land at London Heathrow? Heathrow is among the worlds busiest airports, with traffic mostly (entirely?) from airliners. Are private/business jets (e.g. Gulfstream G650 or Cessna Citation X) allowed to land at Heathrow?

If so, what are the landing fees and what criteria do they use in charging them?
The answer appears to be "yes", but unless you're transferring directly from the private jet to/from an international flight in/out of Heathrow, it's a poor choice. Fees are high and delays are common.

With no fewer than 13 other airports to choose from, chances are that one of the others will be a better choice. Luton and Farnborough are the most popular choices for private jets.

Reference:

PrivateFly: Inside London Airports - Private Jet &amp; Helicopter charter