Stansted , London 's third-busiest airport after Heathrow and Gatwick , is located about 30 miles ( 48 km ) northeast of the capital .
<response> <location>Stansted</location> , <location>London</location> 's third-busiest airport after <location>Heathrow</location> and <location>Gatwick</location> , is located about 30 miles ( 48 km ) northeast of the capital . </response>