This was reported on the British government website.

“The first Ukrainian pilots graduated from flight school, having undergone intensive training under the guidance of Royal Air Force instructors... Ten pilots completed basic flying, ground school and language training in the UK,” the release says.

It is noted that they will have to undergo advanced training courses conducted by the French Air Force.

Earlier, The New York Times, citing Danish officials, wrote that the training of Ukrainian army pilots to operate F-16 fighters in Denmark was slowed down for several months due to their lack of knowledge of English.