With the way brokers are jumping ship and joining competitors in London I'm starting to wonder if anyone is working over there or if everyone is on garden leave.

In the latest moves, Aon Ltd. said Monday that it has lured away a number of aviation experts from various competitors to join its London-based general aviation team.

Joining Aon in alphabetical order are: Jeremy Chase, a specialist aviation broker formerly with Marsh; Shannon Christie, a client manager formerly with Willis; Matthew Morris, a client manager formerly with Amlin; Simon Brunsdon, a client manager for Americas business formerly with Sturge Aviation Agency; and James Whiter, an aviation broker formerly with HSBC Insurance Brokers.

The hires come a little more than six months after a trio of aviation brokers—Bill Smith, John Cruse and Steve Turner--left Aon Ltd. to join Jardine Lloyd Thompson's aviation practice in London.

Aon Ltd. said that is has attracted 20 people to its airline and aerospace team within the last nine months