Landing fees at European airports are much higher than the US. In the interests of competition the UK authorities allowed airlines to show the PSC (Passenger Service Charge) that is levied by the airport owner on the airline for passengers use of airport facilities. This is around GBP15 for places such as LGW and LHR.
As a private pilot (flying single engined Cessna and Piper aircraft) I have flown in many differnet countries. I have never paid a landing fee in the US, however, in the UK it is a different matter. My home airport, Edinburgh, charges around GBP7 for each landing or touch and go for aircraft based there or around GBP20 for visiting aircraft. If they charge that for a small plane just think what they charge for commercial aircraft!