De Havilland Mosquito
In May 1943 Broom joined No. 1655 MTU as an instructor. In May 1944, Broom joined No. 571 Squadron flying the De Havilland Mosquito XVI as part of the Light Night Striking Force (LNSF) where he teamed up with his navigator Flight lieutenant Tommy Broom. They were known as "The Flying Brooms" and had a pair of crossed broomsticks painted on the nose of their aircraft. They remained friends until Ivor's death in 2003.