Alesco Risk Management Services, AJ Gallagher's wholesale arm, has made four appointments in its energy division.

The broker has appointed David Hallows, Rob Neighbour and William Holden as partners, and Charlotte Clayton as an associate partner within the international energy team.

Hallows and Clayton join the firm from Willis, with Hallows reporting to Simon Clarkson, head of Alesco’s energy team.

Hallows will start at Alesco later this month, joining Clayton and Neighbour, who both started in July.

Neighbour joined the business from THB and will focus on upstream and midstream business, predominantly out of the US.

Meanwhile, Holden is set to leave Price Forbes to join the Alesco team as lead broker of US energy casualty.

John Thompson, managing partner of energy and construction at Alesco, said: “Alesco’s energy team is having a record year, and I’m delighted that the second half will see some more incredibly talented individuals from the industry join our expanding independent wholesale business.

“I am very much looking forward to working with the new team as we continue our path of growth and develop new and more effective ways to bring our capabilities and expertise to bear for our clients.”