UK – Airprox 2015046

by Date: 11 Apr 2015 Time: 1525Z Position: 5118N 00007W Location: West abeam Kenley (Saturday) THE EC130 PILOT reports tracking to the Isle of Dogs for a London sightseeing tour. West abeam Kenley gliding site at 1600ft QNH, he saw what he believed to be a helium party balloon about 20 off the port side"