This was reported by the General Staff of the Armed Forces of Ukraine on July 22 with reference to the UK Ministry of Defence and the the Permanent Joint Headquarters (PJHQ).
Photos were also published that illustrate how the Ukrainians master the British MANPADS.
Read more: Ukrainian Troops Shot Down Russian Drones with Stinger and Starstreak MANPADS
"The training will help Ukrainian Recruits defend their sovereign skies from Russia’s illegal aerial advances!" Ukraine’s Armd Forces General Staff cites the UK PJHQ’s message.
The Starstreak is a British short-range, portable, air-defense system optimised to provide defense against air threats.
In particular, the Starstreak High Velocity Missile (HVM) is designed to counter threats from very high performance, low-flying aircraft and fast ‘pop up’ strikes by helicopter attacks. The missile, which travels at more than three times the speed of sound, uses a system of three dart-like projectiles, allowing multiple hits on the target. HVM can be fired from the shoulder, from a lightweight multiple launcher or from the Stormer armoured vehicle. It is made by Thales in Belfast.

As Defense Express reported, British MANPADS Debuted in Ukraine's War Against russia in April, 2022.
Read more: Ukrainian Troops Continue to Shoot Down russian Air Targets with Stinger and Starstreak MANPADS